how to grow bomb weed

THC Bomb Strain – Everything You Need to Know & More!


Tick, tick, tick, BOOM – THC Bomb strain is gonna blow your brain sky-high! THC Bomb is an evenly blended, sativa/indica firecracker with over 20% THC for powerful pyrotechnic potency! When you light this rocket, the flavors are sweet and citrusy, and the fumes are pungently piney. THC Bomb strain launches you like an intercontinental ballistic missile into a nuclear head high that leaves you energized and uplifted, while the indica-half of the explosive mixture relaxes your body, making this an ideal late afternoon or early evening toking enjoyment – some stoners use THC Bomb as a go-to wake’n’bake strain.

This bombastic bud can boost your mood, and it can blast your aches and pains; THC Bomb strain is gyroscopically balanced with equal amounts of sativa and indica so that the effects are also stabilized between being stimulating (but not to the point of shakiness and jitters), yet it leaves you with a serene sense of tranquility (without couch-locking you). Hybrid fans will love this toking torpedo because it has megatons of THC with an equalized charge of sativa matter and indica antimatter that combine to annihilate your stress, depression, pain and nausea. If you wanna rock your world, THC Bomb will blow your blues to smithereens and pummel your pain into submission – and you’ll get nicely high in the chain reaction!

(THC Bomb in dispensary packaging, image from Chel Silly on Instagram)


Like the Manhattan Project that built the original A-bomb, the origins of THC Bomb are a closely-guarded secret of Dutch Grow merchants Bomb Seeds – THC Bomb genetics is never even mentioned on their official web site; notoriously closed-lipped those Netherlanders can be when it comes to their weapons of mass weedening!

We can, however, makes some educated guesses about what might be the THC Bomb lineage: some have suggested 65% indica/35% sativa Skunk possibly bred with 90% indica Afghan or 100% indica Hindu Kush; Skunk has a hefty THC level of 21%, generally, whereas Afghan K has a THC level of 16% to 21%, depending upon phenotype (environmental variations in a particular pot strain) and Hindu K boasts 23% THC, so these are good contenders for the pot parents of THC Bomb. But nobody knows for sure, except for Bomb Seeds – and they ain’t talkin’!

There is a sativa-dominant offspring of THC Bomb and Gorilla Glue #4 called Gorilla Bomb strain that packs a walloping 25% THC yield. Gorilla Bomb has a sweet, citrusy taste when toked and gives off vapor or smoke with a sour, pungent smell. The beneficial effects of Gorilla Bomb are uplifting euphoric happiness and strong relaxation.

There has been a trend of late for weed strains to be bred for higher and higher THC levels; yes, because they get you higher and higher! There is one newer strain, known as Future #1 cannabis strain, grown by Portland-based 7 Points Oregon, that has a doomsday device level of 37% THC – that is beyond the multiverse levels of psychotropic potency! Imagine a shatter, wax or crumble concentrate level of that particular weed strain, one dab and you would be done for! THC Bomb may not be that gonzo, but it’s still a mighty warhead of a weed strain in its own right!

Some hybrid weed strains with potency and effects similar to THC Bomb include 27% THC Blue Dream, 25% THC Gelato, 26% THC Lemon Kush, and 21% THC Tahoe OG.

(THC Bomb concentrates, image from Herb ‘n Burnie on Instagram)


THC Bomb General Effects

THC Bomb Medical Effects

THC Bomb Side Effects

Lower Anxiety 80%

Sleep Better 50%

Reduce Nausea 40%

(THC Bomb in provisioning center jar, image from Justin Smokes Dank on Instagram)


If you decide to procure yourself an 8th of an ounce of THC Bomb ganja greens from your favorite marijuana depot, then you could reasonably expect to fork over an average of $45-50 for medical in Seattle, Washington – and also in Phoenix, Arizona, with recreational running slightly more. As with any strain, factors that could affect the price of THC Bomb strain include the quality of the source plants, the strain’s availability, the time of year and the geographic location – for instance, the Western United States was the only place we could find THC Bomb, currently, in leaf form. Also keep in mind that many local dispensaries are required to charge customers a local or state tax, averaging 2-6%, on cannabis sales; that’s how states make their money on legalizing weed sales. THC Bomb concentrates are about $30 per gram for live resin in Los Angeles, California; Eugene, Oregon has terp sugar for $24 a gram; and we found shatter in Phoenix for $24 a gram. Pre-rolled joints run from $15 apiece in Las Vegas for a standard half-gram doobie – some places will have joints of a gram to two grams or more, and they will be correspondingly more expensive. Edible marijuana labels often don’t necessarily specify the type of weed strain used in making the pot treats, usually, they just indicate the level of THC or CBD – but you can always ask the budtenders at your shop if they know of any THC Bomb specific snacks.

(THC Bomb seedling, Dr. Cannabist, on Instagram)


The THC Bomb grow produces plentiful pot: THC Bomb’s yield is an incredible 51 to 60 grams, or 1.8 to 2.1 ounces, of nugs per square foot of plant, generating well over 1kg of pot per bud bush (that’s 2 ¼ pounds or 36 ounces) – that is a lot of bang for your buck! THC plants are short, 65-90 cm or 25 ½ – 35 ½ inches high, and bushy. THC Bomb buds are big, purplish and hairy, covered in frosty trichomes, and packed tightly together; plus, they have very high levels of THC, 20-25% when grown under favorable conditions, indoors or out, in a semi-humid climate, between 72 and 80 degrees Fahrenheit (or 22 to 26 degrees Celsius).

How long does it really take to grow THC Bomb auto-flowering plants – which means they bud out based on age, instead of changing hours of light (so they make better indoor growers) – from seed to flower? THC Bomb strain takes about 10 to 11 weeks to flower. And since only female marijuana plants produce the cannabinoid-rich nugs chock full of the flavors and effects stoners crave, the only THC Bomb plants you want to buy and grow – if you’re into that – are THC Bomb feminized seeds or seedlings.

Plants and THC Bomb seeds can be purchased either at a brick-and-mortar nursery or dispensary, or they can be picked up online at sites like Bomb Seeds themselves – the originators of THC Bomb, which has 10-seed packets for £26 (equivalent to $32 USD); or you can get GYO Green Seedbank feminized seeds at $49.28 USD for a 5-pack (£39.41), or 10-pack for $92.31 USD (£73.81).

And, incidentally, Gorilla Bomb strain (the offspring of THC Bomb and GG#4) plants grow up to 90-130cm, or nearly 3 ft to 4 ¼ ft high with a high yield of 400-550 grams (14 to 19 ounces) per square meter and they have a 9-10 week flowering time. You can buy Gorilla Bomb 5-seed packets at Bomb Seeds for £26/$33USD; or Seed Supreme has 5-seed packets of feminized Gorilla Bomb strain for $32.51 USD/£25.99.

So, get you some dirt, some fertilizer, some grow lights, possibly a humidifier if you live in a dry climate and mebbe try your hand at raising up some short ‘n bushy THC Bomb potent pot plants. If they don’t grow (not everyone has a green thumb, some folks couldn’t grow potatoes regardless of their good intentions) – well you tried; if they do grow, then you are all set when you want to detonate your troubles and boost your brain into stratospheric highness!

Here is a cool time-lapse of a THC Bomb grow with some interesting technical info and a sweet soundtrack:

Bonus Content: DIY THC Bath Bomb

Okay, before we review what we have learned about THC Bomb strain and shuffle off to our next cannabis writing adventure, we wanna throw something extra at you: THC bath bombs – not necessarily directly related to THC Bomb weed, but maybe you could use THC Bomb strain in making yourself some bath bombs. Confused? Wondering what in the world bath bombs even are? Confusion is part of the cannabis connoisseur – or cannasseur – scene, so puff some of your favorite stuff, and let’s wade into this!

Bath bombs are tub toys for big people – basically, a small ball of essential oils or other effervescent ingredients designed to help you relax and enjoy a soak in the tub. If you’re a bit too old for Mr. Bubble bubble bath, then bath bombs just might be for you! And, no, if you pass gas in the tub, it doesn’t qualify as a jacuzzi!

Now, cannabis being the versatile consumable wonder that it is, works just as well topically as internally consuming it through smoking or ingestion – although more slowly because it takes a little time to seep into your muscles and bloodstream once it soaks through your skin. Applied externally, either as a dermal patch, lotion, or as a bath bomb ingredient added to the water you are partially (unless you have a snorkel) submerged in, relaxing effects provided by cannabis can lead to the easing tired and tense muscles, reducing pain and inflammation, and overall, bringing you to a state of peace and contentment. What’s not to love about that?

So, how do you craft your own do-it-yourself THC bath bombs? That is just what we are gonna let you in on! This will probably take you about three hours altogether to produce just one THC bath bomb – which is a lot of work, but it will be more than worth it the next time you have a physically exhausting, soul-crushing day at work and just want to unwind nekkid in the tub for a bit.

(Prepackaged THC bath bomb, image from Christmas Remedies on Instagram)

What you will need:

  • Small bowl
  • Medium mixing bowl
  • Bath bomb molds, which can be found at craft stores, department stores like Walmart, or online at sites like Amazon or eBay.
  • 4 oz baking soda
  • 2 oz corn starch
  • 2 oz citric acid
  • 2 oz Epsom salts
  • 1 ½ tsp water
  • 1 teaspoon of your favorite essential oil (lavender, vanilla, rose, jasmine, sandalwood, and citrus are supposed to be good for relaxation)
  • ¼ teaspoon THC (or CBD if you want milder effects) infused coconut oil or tincture (yes, we’ll include a recipe for THC tincture below)
  • 1–2 drops food coloring (pick your favorite color, or mix them together for a uniform gray) or ½ tsp of dry food coloring

What to do with it all:

  1. Combine all your dry ingredients, except for food coloring if you are using dry color, in the medium bowl, and whisk together.
  2. Next, mix all wet ingredients, except for food coloring if you are using a liquid color, in a small bowl.
  3. Very slowly, combine liquid mixture and dry mixture together, whisking as you go. Slow down if it starts to fizz a lot. Add liquid food coloring now, if that’s what you have.
  4. Once everything above is mixed well, you should have the consistency of damp beach sand. Take some in your hand, squeeze and it should stick together pretty well when you open your hand – if not, add a few more drops of water. When you are happy with the consistency, then mix in the dry color powder if you haven’t already used liquid coloring.
  5. Fill each half of the bath bomb molds with the mixture until slightly over-filled, being careful not to pack too much. Sprinkle some more of the mixture on top of each half to help seal the halves together.
  6. Press the halves firmly together and hold for 10 seconds.
  7. Tilt sideways and carefully remove the ‘top’ side of the mold.
  8. Set the bath bomb with the remaining mold side down and let dry for at least 20 minutes.
  9. Finally, slowly and carefully remove the final mold with a gentle twisting motion. If it breaks, it will still work – sometimes, if still damp, you can just smoosh the halves together.
  10. Let sit overnight until the bath bomb is totally solid, then enjoy your THC bath bomb whenever the mood strikes you!

Okay, now the THC tincture recipe we promised you (this is actually from our ‘Thinking of Smoking Weed with a Cold? Everything You Need to Know’ blog, which you really should check out when you get the chance – and especially if you have a cold):

Do-It-Yourself Cannabis Tincture

  1. Decarboxylate 3 ½ grams of ground ganja at 225 degrees for 20 minutes spread out on a cookie sheet.
  2. Put activated cannabis in a sealable jar or vacuum-seal bag with ½ cup vegetable glycerin.
  3. Heat jarred or bagged pot in a pan full of water just under boiling for about 1 hour.
  4. Strain weed particulates out of mixture and chill to use in recipes like the one above.

There you have it, two recipes – one for the THC bath bombs and one for THC tincture; and of course you can use THC Bomb strain to make the tincture that you then put in the THC bath bombs and depth charge your tub soak! What a blast!

(THC Bomb feminized seeds, Sweedlife Grow Shop on Instagram)


THC Bomb is some dy-no-mite weed with a THC level of 20-25% when properly produced in a prime climate with mild humidity. While THC Bomb genetics is a bit mysterious, Bomb Seeds has created an acclaimed cannabis strain that is noteworthy for its big bad buds and powerful potency; there is some speculation that indica-leaning Skunk (also known as Skunk #1) is part of the THC Bomb lineage, along with indica-dominant Afghan or Hindu Kush; both suspected pot parents have THC levels of at least 21% or higher, depending upon environment variations in phenotype. THC Bomb strain itself has been paired up with Gorilla Glue #4 to produce Gorilla Bomb strain, which has a big bang itself with 25% THC. We may not know where THC Bomb came from, but we know that it’s already going places as a launching point for pairing with other high-THC weed strains.

So, while THC Bomb may be weed of unknown origin, what we do know about it is pretty impressive: firing up THC Bomb flower offers you sweet and citrusy flavor along with a piney fragrance, and a mighty fine high that is both heady and yet relaxing because of its 50/50 indica/sativa intermixed configuration. Toking on THC Bomb can light you up with explosively energizing effects, focusing and uplifting your mind while easing your pain and relaxing your sore muscles – so it would make a bodacious DIY THC bath bomb using the recipe that we just gave you! Whether you soak in it or smoke it down, the fallout is gonna be less stress and anxiety, powerful pain relief, significantly better sleep, and no more nausea. Sure, there’s a little fallout in terms of dry mouth and eyes, but those are common enough consequences of cannabis consumption – some eye drops and a glass of water oughta do you.

If you are searching out some THC Bomb strain for yourself to try, then be aware that it is a predominantly Western strain in terms of purchasing from a provisioning place – but you can buy THC Bomb seeds and try your hand at growing your own ganja grenades. How long does it take to grow THC Bomb auto-flowering plants? About 10 to 11 weeks, which is not too bad. You wanna be sure to get yourself some THC Bomb feminized seeds or seedlings – since only the lady plants are gonna pop with plump, potent nugs for you to pluck and put into your weed pipe or bong bowl. Patience is required whenever you decide to cultivate your own weed, but sometimes it’s your only option if you can’t find certain kinds of cannabis near your neighborhood.

Well, what are you doing sitting around reading this THC Bomb review? Either go out and buy yourself some THC Bomb strain leaf or concentrate from your local dispensary or else internet yourself some THC Bomb seeds so you can get busy and grow your own – either way, once this firecracker weed strain finds its way into your preferred toking or dabbing paraphernalia, THC Bomb is blown your weedy little brain to smithereens!

Here is a perky pot princess giving you the lowdown on THC Bomb – one more for the road:

Intro: Tick, tick, tick, BOOM – THC Bomb strain is gonna blow your brain sky-high! THC Bomb is an evenly blended, sativa/indica firecracker with over 20% THC for powerful pyrotechnic potency! When you light this rocket, the flavors are sweet and citrusy, and the fumes are pungently piney. THC Bomb strain launches you l

How to Start Growing World-Class Weed for $135

You want to try growing weed but refuse to spend a fortune. You don’t need the biggest harvest ever, but your time or effort must be rewarded with a good amount of high-quality buds the very first time.

The method in this tutorial will give you…

  • 1+ ounces per harvest (2-4 ounces is average)
  • Potent high-grade buds of your chosen strain
  • Seed to harvest in under 90 days
  • As little as $135 to get started (supplies list with links below)
  • Electricity: $10/month (for USA average electricity cost of $0.12/kWh)

Total Cost of 1st Grow: $135 plus $10/month electricity (as little as $20/grow for supplies after that)

This is the basic setup (total estimated cost includes seeds, grow light, grow medium, plant containers, and nutrients)

Example of buds produced (strain is Auto Amnesia by MSNL)

Supplies Needed

Here’s an overview of all the supplies you need to start growing cannabis via this method:

Grow light – Starting at $70

The average cost of electricity in the USA is $0.12/kWh. At 18 hours/day, that’s an electricity cost of about $10/month for the 150W HPS, and $7/month for the HLG 100.

  • Cheapest: 150W HPS grow light ($10/month for electricity) – $70
  • Premium Alternative: HLG 100 v2 3000k Quantum Board ($7/month for electricity, yields the same or more, less heat, no need to replace a bulb every 3-4 grows ) – $150

This $70 grow light can produce up to 5 oz (average of 2-4 oz)

Plant pots or containers – Starting at $4 for one

  • 2-gallon pots with saucers
  • Recommended 1-2 plants
  • Usually $3-4 for a 2-gallon pot with a saucer at a garden store or plant nursery
  • Buying pots online is cheaper if you get multiple pots at once
  • Free alternative: you can use almost any container or bucket to hold your plants as long as you drill holes out the bottom to let extra water drain through. You also want some sort of tray to catch runoff water and make sure it doesn’t spill on your floor.

Plant pots are usually sold as a set online, but garden stores sell individual pots. Or DIY your own pot for free!

Grow medium (soil, coco, hydro, etc) – Starting at $18

Your plants need a place to put their roots. You have lots of different grow medium options for growing weed, and the most common is good old-fashioned soil.

  • Just about any organic potting mix will work. Avoid any soil with “slow-release” nutrients unless they’re organic and have been composted into the soil.
  • Example: Black Gold Organic Potting Mix (one bag will fill 4 gallons worth of pots, or two 2-gallon pots) – $18
  • Premium Alternative: Coco Loco – This is my favorite soil potting mix. My cannabis plants absolutely love this stuff and it’s actually pretty economical. One bag fills 12 gallons, so even though it costs double the cheap option, each bag lasts 3 times as long – $35
  • Often cheaper to buy soil in person than online (especially with shipping costs)

Learn more about growing in soil or coco. Adventurous alternative: Hydroponics

Nutrients – Starting at $10

If you’re starting with soil, you may be able to avoid using nutrients at all. Yet if plants use up the nutrients in the soil you’ll start seeing nutrient deficiencies and slow growth. To help ensure the best yields and bud quality, I recommend you get at least a Bloom nutrient (low in Nitrogen and high in Phosphorus/Potassium) for plants that are actively growing buds.

  • Recommended: Dyna-Gro Grow & Bloom – $21 (great for cannabis in any setup, any grow style) – although originally developed for orchids, this simple nutrient duo excels at growing cannabis and is now marketed directly to pot growers.
  • If you can’t afford both bottles, get just Bloom. The smallest bottle usually costs $10-12.
  • If growing in coco or hydro, you need to use nutrients from beginning to end, and Dyna-Gro Grow + Bloom excels at that.
  • Follow the included instructions at 1/2 strength (same with almost any nutrient system for cannabis plants). Only increase the amount if you notice the plant is getting lime green or pale all over, which is the main symptom when a plant needs overall higher levels of nutrients.

If you can’t get both bottles, at least get a bottle of Bloom so you don’t run into deficiencies during the crucial bud-building phase

In an absolute pinch, you can use cactus/succulent nutrients in the budding stage since they typically have similar nutrient ratios. However, they don’t usually contain many micronutrients, which means they may not perform as well as something more complete like Dyna-Gro.

A place to grow weed

You can put your plants almost anywhere as long as you have access to water, fresh air, and a way to hang the light. Some common examples:

  • closet (common)
  • spare bathroom (easy access to water and a drain)
  • spare room
  • garage, basement, or attic
  • Read more about choosing the right spot

This is one of my first grows (circa 2008). I put the plants right on the floor in a walk-in closet and hung the light from the bar you hang clothes from. This setup produced great weed, though I highly recommend putting something down to protect your carpet!

I’ve seen some growers DIY some pretty amazing grow spaces

Possible upgrades for your grow environment (all are optional but nice)

  • Grow tent – super convenient way to set up a “pop-up” grow area, costs $50-100 on average
  • Clip-on fan(s) or small table fan – if you need extra air movement
  • A carbon filter and exhaust fan for smell control (the more weed you grow, the bigger the smell)
  • Reflective walls – use sheets of mylar, paint walls white, etc.
  • Rope ratchets – helpful for raising/lowering your grow light, carbon filter, or anything else you’d like to hang in the grow area. Much more convenient than using rope.
  • Thermometer/Hygrometer to measure the temperature and humidity. I like models that let you hang a probe in the grow area so you’re measuring the exact spot you want.

It’s hard to beat the convenience of a grow tent. While not necessary to success, grow tents can be put anywhere for an instant “pop-up” waterproof grow space that helps contain heat, light, and smells. Also great for keeping multiple grow spaces at the same time.

Seeds or clones – Starting at $30 for 3 seeds

My recommended strains start at

$30 for 3 seeds. There are cheaper strains, but these are ones I know and recommend.

3 Main Ways to Get Plants

  • Buy seeds online
  • Get seeds or clones in person
  • Use seeds you find in buds (bagseed)

Did you know you can buy cannabis seeds online and get them shipped to you?

For the best results with this tutorial…

  • Order from a reputable breeder to ensure you get the results you expect.
  • Choose auto-flowering seeds to harvest in under 90 days. I like auto-flowering strains for first-time growers because plants are ready to harvest quickly, tend to stay on the smaller side, and automatically make buds without you doing anything special. They are simple: give water, nutrients, and light, then wait for harvest. However, you probably won’t run into any auto-flowering seeds unless you get them from a breeder.
  • Choose feminized seeds to ensure all plants are female and grow buds. Save yourself the trouble of dealing with male plants or the possibility of seedy buds. Learn more about feminized seeds. Just about all auto-flowering seeds are feminized unless they specifically are listed as “regular”.

Choose autoflowering feminized seeds from a trustworthy breeder to ensure every plant grows buds and is ready to harvest in under 90 days. This Cinderella Jack Auto by Dutch Passion produced many dense potent buds and was harvested 79 days from germination

Looking for auto-flowering seed recommendations?

  • Zkittlez Auto by Seedsman – Seedsman is both a breeder and a seed bank. They carry pricey high-end strains from many breeders but also use their connections to offer new and celebrated genetics at reasonable prices. A few years ago, Seedsman started focusing on their in-house auto-flowering breeding program, and have built an impressive autoflowering strain library. Their easy-to-grow Zkittlez autoflowering strain is popular because buds are potent, smell surprisingly sweet, and taste fruity. Great for someone who wants high potency combined with the taste and smell of new genetics – $30 for 3 seeds
  • Gelat.OG Auto by Seedsman – This may be the best autoflowering version of the trendy and euphoric Gelato strain. Plants tend to stay on the shorter side and buds occasionally turn purple. For someone who wants STRONG mental and physical effects above all else – $30 for 3 seeds
  • Auto Amnesia by MSNL – Forgiving and easy to grow, buds always come out glittery and potent. I’ve grown this strain multiple times and it responds remarkably well to every light I’ve tried including cheap “blurple” LEDs that stressed out many of the other plants. In fact, Auto Amnesia almost seems to perform best in extreme conditions as some of the best buds came from a plant that grew too close to the light. The one downside is that plants tend to grow a bit stretchy/tall compared to the others on this list (though they respond well to bending/LST to keep them short and are resistant to light stress) – $40 for 5 seeds
  • Auto Grand Daddy Purple by MSNL – I’ve had really good experiences with all of the MSNL autoflowering strains. This particular strain often turns purple and buds come out dense with stellar effects and a spicy-sweet smell. You can help promote purple coloring by giving plants warm days and cool nights in the last 2-3 weeks before harvest – $52 for 5 seeds
  • THC Bomb Auto by Bomb Seeds – I’m super impressed by this strain every time I grow it. It thrives under many different types of lights and plants grow fast and bushy. Good-to-great yields and the buds get encrusted in trichomes/glitter. I actually got two of these plants lab-tested (as part of a different project) and buds measured between 18-20% THC, exactly as advertised – $50 for 5 seeds
  • Cinderella Jack Auto by Dutch Passion – I first grew this strain after a representative from the company told me it was Dutch Passion’s most potent autoflowering strain. I was beyond pleased with the results I got every time I grew it. Dense and glittery buds, high-yielding, ultra-high potency (couchlock) and plants are overall forgiving to growing mistakes – $42 for 3 seeds
  • Ultimate Auto by Dutch Passion – easy to grow, very high yielding (usually yields more than any other plant in the tent), and has responded well to multiple different grow lights. The smooth-smoking buds promote relaxation and good vibes. The perfect daytime strain (not too heavy) and well-loved by those looking for more classic mental effects. The potency has been described as reminiscent of California weed from the 1990s and early 2000s – $35 for 3 seeds
  • I hope that list helps you get started!

This Zkittlez Auto plant was harvested 85 days from germination

Glossary of Most Important Terms When Shopping for Seeds or Clones

  • Auto-flowering Strains – Auto-flowering plants grow buds automatically and are usually ready to harvest in under 90 days from germination. Can be a good choice for a first grow, but auto-flowering seeds are only available from specialized breeders.
  • Photoperiod Strains – Most cannabis seeds are photoperiod. If you find seeds, they are likely photoperiod seeds. Photoperiod plants need daily 12-hour dark periods to grow buds (usually done by putting grow lights on a timer). Photoperiod plants typically take between 3-5 months to grow from seed to harvest. Read more on how long it takes to grow weed. Don’t worry if you’ve got photoperiod seeds. This tutorial recommends auto-flowering strains, but I’ve also included instructions for photoperiod plants in the step-by-step directions.
  • Feminized seeds – All resulting plants are female, which means they grow buds. I highly recommend starting with feminized seeds for your first grow so every plant produces buds for you.
  • Regular seeds (non-feminized) – Half the plants will be male, which grow pollen sacs instead of buds. Male plants are non-potent and make nearby buds seedy. If growing with regular seeds, you should identify and remove male plants as soon as possible.
  • Clones are basically small plants and don’t need any special treatment. A clone is usually known to be male or female (ask to be sure it’s female if you want to grow buds!). You can also take clones of your plants and use them as free plants in future grows.
  • Bag seeds (seeds you randomly find in buds) can be hit or miss. Some growers get lucky with bagseed, but unknown genetics can be a confidence killer if buds turn out poorly even though you did everything right. Start with trustworthy genetics to help ensure plants are predictable and produce the results you want. Learn more about starting with “found” seeds.

Now that you’ve got everything, it’s time to start growing!

Here’s an HPS-grown bud from a THC Bomb Auto plant. This strain always makes beautiful buds but for some reason they got especially glittery under the small HPS. One of my favorite smokes from that grow!

Quick Step-By-Step Grow Guide

The hardest part of growing is choosing a good setup. Once you create a nice growing environment, nature will do a lot of the work for you.

1.) Set up your grow space

  • Get the items listed above
  • Set up your grow tent if using one
  • Hang your grow light. Both the HLG 100 and 150W HPS recommended for this tutorial should be kept about 12″ away from the tops of plants.
  • Fill your plant pots with potting mix
  • Assemble your area and turn the grow light on for 24 hours before germinating seeds (make sure everything works before you actually start your grow)
  • Temperature should stay be between 70-85F (20-30C) day and night. If it feels comfortable to you, it’s probably comfortable for your plants.

Whether you’re using a grow tent or a closet, the main idea is to first hang your grow light

Then get your plant pots ready (or set up your hydroponic reservoir). If you plan on setting up an exhaust to remove heat and/or get rid of smells, now is the time. A venting system can be as simple as adding a fan pointing out.

If you want to ensure you never smell your plants when the tent is closed, you’ll also have to connect the exhaust fan to a carbon filter with ducting.

Don’t forget to turn everything on for at least 24 hours before you start germinating! You want to know what to expect from the environment before you have live plants on your hands.

2.) Germinate Your Seeds

I like this germination method, but there are many ways to germinate seeds (including planting them directly in the soil). If starting with rooted clones, you can skip directly to the next step.

It’s always a good idea to germinate at least one extra seed in case you happen to have a dud. I recommend growing 1-2 plants for your first grow to keep things small and simple, so start by germinating 2-3 seeds.

There are tons of ways to germinate seeds and they all work. The most important thing with any germination method is to make sure seeds stay moist and warm.

3.) Vegetative Stage – Plants Grow Only Stems and Leaves

At first, your cannabis plants will only grow new stems and leaves (no buds yet).

Your main tasks in this stage are:

  • Water your plants regularly (or tend to the hydroponic reservoir)
  • Give nutrients at half the listed strength (if using nutrients)
  • Watch for plant problems and react quickly if you see anything odd
  • (Optional) Get familiar with plant training to increase yields

Your plants will only grow stems and leaves at first. In the vegetative stage, plants keep getting bigger but don’t grow any buds

Most cannabis plants naturally grow in a “Christmas tree” shape in the vegetative stage unless you take action to change it

For example, these autoflowering plants are bushy and short because I trained them to grow in that shape (starting when they were just 3 weeks old). This bushy shape forces cannabis plants to grow many bud sites as opposed to just one main bud site at the top of the “Christmas tree”.

There’s nothing wrong with letting plants grow naturally, especially for your first few grows. But if you plan to keep growing inside under grow lights, plant training is important to achieving the best yields.

4.) Flowering Stage – Buds Start Growing!

This is the stage where plants start growing buds. It’s exciting! You’re getting closer to harvest every day.

If you started with auto-flowering seeds…

  • Auto-flowering plants will automatically start growing buds around 3-4 weeks from germination
  • Besides switching to using flowering nutrients, plant care doesn’t really change from the vegetative stage.
  • Buds are typically ready to harvest 2-3 months after germination

Auto-flowering plants start making buds when they’re 3-4 weeks old from germination. You don’t need to do anything special. This autoflowering plant is 4.5 weeks old.

If you started with photoperiod seeds…

  • Photoperiod plants require you to put grow lights on a timer and give them 12-hour dark periods every day in order to grow buds. The term “photoperiod” actually refers to the fact they respond to light periods (“photo” can mean light + “period”). Photoperiod plants won’t make buds until you initiate the flowering stage with a 12/12 light schedule.
  • Since you “tell” the plant when to start flowering, the vegetative stage can be as long as you want.
  • While auto-flowering plants naturally tend to stay relatively short, photoperiod plants can easily get huge and out of control if you wait too long to initiate the flowering stage. On average, plants about double in size after the switch to 12/12, so you should initiate the flowering stage when plants are about half the final desired size.
  • Be careful to not let any light get to the grow space during the “night” period or plants may revert to the vegetative stage (which takes time to fix) or herm (causing seedy buds).
  • Photoperiod plants typically have an 8-14 week flowering stage (length of the flowering stage depends on strain)
  • Example photoperiod timeline: 6-week vegetative stage + 8-14 week flowering stage gives a total grow period of 3-5 months from seed to harvest.

Photoperiod plants typically take 1-3 weeks after switching to 12/12 before they start making buds. At first, the buds look like bunches of leaves in a star shape, then white hairs start growing from the middle

After plants start flowering, double-check to make sure all your plants are only growing white hairs at the joints. This ensures your plants are female and forming buds.

If you see what looks like little bunches of spade-shaped balls with no hairs, that means the plant is male and should be removed from the grow room so it doesn’t pollinate your female plants.

If you see pollen sacs (look like bunches of pointy grapes), remove the plant immediately from the grow area. Why?

Nutrients – Switch to flowering nutrients

  • Once you see buds forming, it’s time to start using the Dyna-Gro “Bloom” bottle for nutrients (or whatever Bloom nutrients you’re using)
  • Start at half strength compared to the suggested dosage. Supplementing your plant with extra nutrients can help produce the biggest and most potent buds possible, but it’s easy to overdo it.
  • Note: Suitable flowering nutrients are low in Nitrogen, and rich in Phosphorus/Potassium.
  • Learn more about cannabis nutrients

An example of untrained autoflowering plants (notice how they have a “Christmas tree” shape)

These autoflowering plants were trained to grow short and bushy

5.) Harvest Time

If you have followed the instructions so far, you’re now approaching harvest! I’ve created a complete guide to harvesting your weed but here’s a quick summary of when to harvest:

  • Wait until the buds on your plants stop growing new white “hairs” (pistils). At this point, you probably still have a few weeks left.
  • When 90% of the pistils have darkened and started curling in, your buds should be fat and ready for harvest.
  • You can get even more accurate results by looking at the glittery “trichomes” on the buds under a magnifier, as these turn cloudy white when the buds have reached their highest potency.

This bud is ready to harvest. All the white hairs have darkened and curled in. If you click the picture and zoom in, you can see that nearly all the sparkly trichomes are milky white, indicating that this bud has reached the highest level of THC.

Another bud that’s ready to harvest. Notice how most of the hairs have darkened and curled in

Different strains may have a different bud appearance at harvest, but the general idea is the same (hairs darken and curl in, buds are fat)

At that point, buds only need to be dried and cured before they are ready to be enjoyed.

Example yield from 150W HPS – 2 Autoflowering Plants – 3.5 oz

Each plant produced just under 2 ounces and height was about 1 foot (30 cm) at harvest. Left plant was Critical Jack Auto by Dinafem (unique smell and thoroughly enjoyable effects) and the right was Sour Diesel Auto by Humboldt Seed Organization (classic sativa effect in auto-flowering form). I grew these in my bedroom (didn’t have an available closet) so I kept them in a 2x4x5 grow tent to contain the heat/light. Other than the tent, there weren’t really any upgrades compared to the base supplies list. I didn’t use an exhaust fan and it stayed about 80F (27C) in the tent.

This is a good harvest but does show what’s possible for growers who follow all the steps in this article including the optional plant training to create multiple main buds instead of just one.

This is the final yield of the 2 plants pictured above (about 3.5 oz)

Closeup of the Critical Jack buds

Example yield from HLG 100 LED Grow Light – 4 Autoflowering Plants – 5.5 oz

Here’s an example harvest from the HLG 100 Quantum Board Grow Light (the premium $150 alternative to the HPS). Instead of Dyna-Gro nutrients, this grow used the General Hydroponics Flora trio + Calimagic as nutrients. Grow medium was Mother Earth Coco + Perlite mix (my favorite pre-made coco mix).

The total yield under the HLG 100 was 156.12 grams or about 5.5 ounces.

These 4 autoflowering plants were kept in a 2x2x3 grow tent with a carbon filter/exhaust fan (lower right) to remove smells. I later upgraded the fan to an Infinity Cloudline so it would run silent (this was also kept in my bedroom so I want zero light and sound when I’m sleeping). These plants could have been grown in a closet or spare room as long as the smell didn’t bother you.

Main upgrades: A grow tent, carbon filter, and exhaust fan to contain light and smell.

I first harvested the Auto Amnesia (absolutely love this strain every time I grow it)

Closeup of the Auto Amnesia buds. Pretty thick for growing under a 100W light with 3 other plants!

A bud from the Auto Amnesia after being dried and cured

Next was the Gorilla Glue Auto plant. I’ve never been happy with this strain and I wouldn’t recommend it. Bud effects and smell are good, but plants grow weird and buds are ugly and airy. Two other examples of Gorilla Glue Auto plants I grew for comparison.

The THC Bomb Auto plant made fat sticky buds, as usual

This is the Ultimate Auto plant. This strain also yields well no matter how you grow it

Those last 2 plants at harvest (THC Bomb Auto and Ultimate Auto)

You got this! Even if you follow just 80% of the directions in this tutorial, if you can keep your plant alive you should easily be able to yield at least 1 ounce!

6.) Prepare for next grow

You’ve already got some of your growing supplies, so your second grow will be cheaper than the first one.

Possible ongoing costs:

    $5/grow to replace HPS bulb – The 150W HPS bulb needs to be replaced every 3-4 grows as they begin to lose brightness over time (not applicable if using an LED grow light) – $15 for a new bulb every 3 grows, or


  • $8-20/grow for soil – Unless you’re growing in hydroponics, you will need to replace your grow medium after each harvest. The cheap soil mix recommended above costs about $20/grow. Pre-made potting mixes tend to be cheaper at garden stores and nurseries than anywhere else, especially if you buy in bulk, but if you’re serious about cutting costs then buying pre-made soil becomes one of your main ongoing expenses. Some growers reuse their grow medium (remove the root ball after harvest and keep the rest) but even in that case, you still have to “top off” with fresh potting mix. It’s not too hard to create your own mix, and that can cut costs dramatically if you choose the right ingredients. For example, a 70/30 coco/perlite mix creates a beautiful soilless potting mix that works great with Dyna-Gro nutrients. Rehydrate a 10-lb block of coco and mix with 18 quarts of perlite costs for about $40 to get about 3 cubic feet of mix (22 gallons). That’s enough for 5+ harvests if using 4 gallons per grow, or $8/grow. That gives you some serious savings over time, and you don’t have to send huge bags of potting mix through the mail. Some growers take the next step and actually mix and compost their own soil at home.
  • $5-10/grow for nutrients – Growers can spend hundreds of dollars on expensive nutrients and supplements, but oftentimes less glamorous nutrients seem to work just as well. Dyna-Gro (the nutrient recommended in this article) is an example of an inexpensive but surprisingly effective cannabis nutrient system. Another economical option is the General Hydroponics Flora trio. The Flora trio costs about $35 for the quart size, and the 3 bottles will give dozens of plants everything needed from seed to harvest. For this size grow, the 3 bottles will last for years.
  • $30/grow for electricity – If using the 150W HPS, the average cost of electricity is about $10/month. For a 3 month grow, that equals a total of $30. (The HLG 100 only uses about $7/month for electricity so it would cost $21/grow).
  • Future grows: As little as $48/harvest (for electricity, nutrients, mixing your own coco/perlite mix, and a new HPS bulb every few grows) – only $34/harvest if using the suggested LED grow light (it uses less electricity and you don’t have to replace any bulbs).

    What about buying seeds?

    If you’re buying new seeds every grow, it becomes an ongoing cost. Buying seeds can get expensive! If you stick to auto-flowering strains, you’ll probably have to buy seeds every new grow. However, after your first grow, you’ll have experience under your belt and be prepared to grow photoperiod strains. Initiating the flowering stage can be a little trickier but overall care is basically the same. Photoperiod plants give you the ability to take clones, which is the easiest source of basically free plants. Another way to get basically free plants is to breed your own seeds or even make your own feminized seeds at home.

    As time goes on, your costs go down while your yields go up

    Other differences after first grow

    • Better yields and bud quality – It’s common for growers to get higher yields and better buds on their 2nd and 3rd grows, even if the setup stays exactly the same. That’s because a little time and experience help you dial in your personal grow style. It’s also common for indoor growers to learn about plant training, which is a free technique to dramatically increase yields under grow lights.
    • More confidence – If you decide to upgrade your grow (get a grow tent, bigger light, better strains, etc.) you’ll actually have the experience to know what’s needed to accomplish your goals.

    IMPORTANT: Always keep learning!

    After a few grows, many growers become convinced there’s nothing left to learn about growing. Believe me, there is always more to learn. I learn something new almost every day. A lot of “common” grow knowledge that’s been passed down for generations is being proven wrong. People are learning about better cultivation practices, developing new strains, and creating new techniques to get better yields and bud quality. Never mind all the new growing equipment aimed at home growers. Keep your mind open and remember to question everything. That’s the only way to ensure each harvest is better than the last!

    How to Start Growing World-Class Weed for $135 You want to try growing weed but refuse to spend a fortune. You don’t need the biggest harvest ever, but your time or effort must be rewarded with a