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Indoor vs. Outdoor Weed: A Visual Guide

This guide was created to help sift through the endless varieties of cannabis we now have available to us at dispensaries. Now, this doesn’t apply to all strains, because every strain has different characteristics and grows different with every farmer’s care. However, these tools can be used to help analyze the often subtle differences between cannabis cultivated outdoor or indoor. At the end of the day, cannabis is a diverse and incommensurable plant — not all distinguishing factors will apply to every situation because every strain is unique.

It’s important to note that buds can be grown properly or improperly regardless of whether they were grown inside or outside, so improperly grown indoor can visually look like outdoor, while properly grown outdoor can easily look like indoor. But there are some standard tell-tale signs that cannabis has been grown inside or outside, so sit back and enjoy our visual guide to indoor vs. outdoor marijuana.

First let’s get a base calibration to see where you are starting.

Can you differentiate which one was cultivated indoors and which was cultivated outdoors?

If you guessed A was outdoor and B was indoor you are correct! Now let’s find out how you can easily differentiate how cannabis was grown through some strategic visual clues.

Size

The sizes of the buds are, in many ways, the first visual cues to tell whether buds were grown indoor or outdoor. But it is a general rule of thumb that everything is bigger with outdoor-cultivated buds. The buds themselves are bigger and chunkier, but one of the most foolproof ways to differentiate the two is by looking at the stem. Outdoor grown buds will have a significantly thicker stem than indoor cultivated nugs. Indoor buds will typically be smaller and more dense than outdoor’s big, clunky nugs.

Trichome Density

Trichome density is a key visual cue when attempting to differentiate between indoor cultivation and outdoor cultivation. Because indoor buds are smaller, closer to their light source, and in a perfectly controlled environment, they typically rank very high on the trichome density scale. So when examining an impeccably grown indoor nug all that can be seen is glimmering crystals with very little plant material visible. Outdoor nugs on the other hand are generally larger, so those trichomes would have to work much harder to cover the entire surface of an outdoor bud. Additionally, outdoor plants are subjected to the elements which can damage trichome development. So the trichome density is typically more sparse on outdoor-cultivated nugs than ones grown indoors.

Example of high trichome density on indoor cultivated buds.

Color

One of the most significant visual characteristics that can be used to differentiate sun-grown cannabis versus indoor-grown cannabis is the color. Outdoor cannabis tends to have a darker hue in general. If the cultivar produces green flowers, outdoor nugs will appear a darker green, possibly leaning towards brown if not cured correctly, while indoor buds will be a brighter, more vivid green. If the cultivar produces purple flowers, outdoor buds will turn a deep, striking purple while indoor nugs will stay lighter shades of purple (unless the strain’s genetics produce dark purple buds in any condition).

Another visual cue is the color on the bottom of the flowers. Buds cultivated outdoors almost always have a light brown color surrounding the stalk at the base of the bud (don’t worry it’s not mold). Usually, the tiny bracts at the bottom of the stalk will be a light brown as well. Indoor buds, on the other hand, are bright green (or purple) throughout.

Example of a darker hue on outdoor grown Lemon Kush.

Cannabinoids

There is a widespread myth that outdoor cultivated cannabis is less potent than indoor-cultivated cannabis. Simply put, that’s just not true. The dedicated farmers at Sunna Ra Acres have busted this myth once and for all. For the last few years, they have been conducting side-by-side tests of two clones taken from the same mother plant, one grown outdoors and one grown indoors. They’ve executed this experiment with a variety of strains and each time, the plant that is cultivated outside under the sun results in a higher overall cannabinoid profile. That means higher in THC, higher in CBD, higher in THCv, etc. Their experiment has shown that the sun unleashes the plant’s true potential and heightens its medicinal power.

Terpenes

In this case, terpenes are very similar to cannabinoids in that their profiles are intensified by the sun. In Sunna Ra Acre’s many years of experimentation they have found that if two identical plants are grown “side-by-side” — one grown outside, one grown inside — the plant that is grown outside will have a higher percentage of terpenes. And in some cases, the plants even reveal terpenes no one knew were there. When these two plants are smoked, the difference is very distinguishable with the outdoor being much more flavorful and aromatic. With that said, terpenes are volatile, meaning they will evaporate without proper drying and curing processes. Many indoor growers take greater care in their final stages of drying and curing because they yield far less and their product moves from one indoor room to another, providing more control through the process. New outdoor growers versus seasoned outdoor growers may overlook the step of proper drying and lose their high-terpene profile as a result.

Trim Job

While this category is very subjective and does not always apply, historically, outdoor growers spend less time trimming their final product than indoor growers. This typically has to do with the amount of bud harvested, outdoor growers are pulling down 5, 10, or 20 lbs per plant while indoor growers are pulling down 0.5, 1, or 2 lbs per plant. Trimming mass amounts of weed per plant would not only take weeks, but a big full-time crew would be needed. So the end result is usually a looser, leafier trim job — especially because outdoor plants are leafier in general. So while not always applicable, you can typically spot the difference between outdoor and indoor pretty immediately by scoping out the trim job.

Running through all these characteristics, with some give and take, while analyzing the hundreds of buds available for purchase at your local dispensary will help you to differentiate the outdoor grown from the indoor grown. If you are lucky enough to have access to the same flower cultivated both indoors and outdoors, it is amazing to smoke them side-by-side and compare the flavor profiles versus bag appeal. Indoor typically has better bag appeal while outdoor has the better flavor profile — it’s all about what you’re looking for in your daily smoke.

Before we go, there is a huge elephant in the room that we have not discussed today and that is greenhouse cultivated cannabis. Greenhouses are can be categorized as indoor cultivation using the power of the sun. It is the perfect marriage of indoor and outdoor because you have the environmental control of indoor but the incredible power of the sun. The result is typically buds that have the bag appeal of indoor with the elevated terpene and cannabinoid profiles of outdoor.

FAQs

Can You Smoke Brown Weed?

Yes, you can, but it’s not going to be as potent or flavorful. The three things that degrade cannabis are heat, light, and time. When brown in color, weed has lost some of its potency and therapeutic value as the cannabinoids, such as THC, have been degraded. In addition, it’s lost a lot of its smell and flavor as the terpenes have potentially oxidized or evaporated. Smoking brown weed will not severely injure you or make you sick, but it is not suggested for use.

Ultraviolet (UV) rays from the sun do break down your cannabis over time. An oft-referred to study from 1976 at the University of London said light is the No. 1 reason for cannabinoid breakdown. If it’s burnt or overexposed to the sun during the growing process, weed will appear brown in hue. The color is due to sun damage on the colas of the plant, and it’s been shown cannabidiolic acid (CBDA) can transform into cannabidiol (CBD) with enough exposure, and THCV will degrade into CBV . In that case, some THC could still be intact, but the cannabinoids were at least partially transformed, or decarboxylated out of the plant by the sun.

How Much of a Difference in Quality is Outdoor vs. Indoor Weed?

There is high-quality weed both grown indoors and outdoors, but there are certain factors that determine the quality of the end product.

Between indoor and outdoor cultivation, the distinguishing factor in quality is the control of its environment. Factors such as temperature, light, water, humidity, carbon dioxide (CO2) exposure and care are going to be easier to control during indoor cultivation. While some strains may appear to grow a bit wilder outdoors, they are capable of developing the same amount of cannabinoids and terpenes as indoor-grown cannabis. Because of the unpredictability of nature, outdoor growing often requires a tepid climate.

The biggest case for growing weed outdoors is energy efficiency. Using all sunlight, or even just partial use of sunlight, to grow cannabis can save home growers and large-scale producers a lot of money in energy consumption. To take advantage of daylight and to take into account its variation during the year, many facilities have adopted a supplemental light grow in states where regulations permit it. Supplement light means the growers are using the sun when they can and then use lights when sunlight is unavailable, if the weed needs it.

The quality is mainly dependent on the seeds, the grower’s experience, and the care, not whether it was grown indoors or outdoors. Outdoor cultivation has a long history in Northern California ; the Emerald Triangle of Humboldt, Mendocino, and Trinity counties got its name because of its ideal climate for outdoor cultivation. In a handful of legal cannabis states, regulations may require grows to be indoors and hidden from public view.

Indoor vs. Outdoor Weed: A Visual Guide This guide was created to help sift through the endless varieties of cannabis we now have available to us at dispensaries. Now, this doesn’t apply to all

Ready-To-Harvest Cannabis Picture Gallery

Harvest cannabis buds at the right time for the highest potency, yields, and best effects!

Cannabis buds can come in all shapes and sizes! Although variety is the spice of life, it can make it a little confusing to know when to harvest your buds based on how your plants look. But if you harvest when buds are ready, you’ll get the best yields and potency, so it’s a good idea to try to harvest at the right time if you can!

We have a full harvest tutorial, but this article is mostly just a picture gallery 🙂

When buds first appear on your plant, they look like little round puffs of hair. Each bud is made up of many white hairs (“pistils”) that stick straight out.

Not Ready

Baby buds (budlets) look like a ball of white hairs. These buds have many weeks to go!

Still Not Ready

As the marijuana plant buds get closer to harvest, they thicken, and those white pistils start to darken and curl up. You’ll notice your buds are slowly getting thicker and denser. However, if you still have a lot of straight white pistils, like this bud, you know you still have a few weeks to go.

Ready to Harvest!

You’re in the weed harvest window when most of the pistils have darkened and curled in. However, sometimes it’s a little challenging to identify when buds are ready since each plant is different, and buds can look very different at harvest time. So today, I want to share lots and lots of pictures of many different cannabis buds that are ready to harvest so you can see the full gamut of variation!

A bud is ready to harvest when most of the hairs darken and curl in

These Cannabis Plants Are Ready to Harvest!

Without further ado, here’s the gallery of “ready for harvest” cannabis buds!

Some buds kind of look almost white at harvest due to either lots of trichomes or the buds themselves may be pale. This type of coloring is how strains like “White Widow” got their name 🙂 If you look closely, the actual pistils/hairs have all darkened and curled in, so this bud is ready to harvest!

A few more examples of pale buds that are ready to harvest

This cannabis bud keeps putting out new white pistils right when it looks like it’s about ready to be harvested! Some plants keep doing this over and over during the flowering stage, and you may eventually have to decide to make the chop. This picture is right before the grower decided to harvest this plant. Learn more about what to do if your plant keeps making new pistils.

Here’s that plant from a little further away for context

This strain grows in a similar way, and this bud is also ready to harvest even though there are lots of new white pistils

This bud has many tiny new sugar leaves and new pistils on top. It also has a top-heavy “fist” shape. These are common symptoms of heat or light damage, especially if they only appear on the parts of the plant close to the light. If this is happening, look at the older parts of the buds to decide when to harvest. Even though there’s a bunch of new white pistils on top, this bud is ready right now because the rest of the bud looks ready!

Since the non-damaged parts of the plant are ready to harvest, this plant is ready to harvest now. All the new pistils are from heat or light damage, and should be ignored! Learn more about why this happens!

Examples of Outdoor Buds that Are Ready to Harvest

These outdoor buds are ready to harvest! Sometimes outdoor buds look a little different than indoor. For instance, they’re often leafier (though not always!)

What About When Pistils Are Pink or Purple?

Sometimes it’s harder to know when to harvest with certain strains because the pistils might be purple or pink from the beginning instead of being white at first. For example, the pistils on this plant came in pink, and as they got closer to harvest, they curled in, and they darkened slightly to an orange hue.

You need to do your best to try to harvest when most of the pistils have darkened and curled in as best you can tell 🙂

Ready to Harvest Auto-Flowering Buds

Auto-flowering strains of cannabis are a special strain variety. Autoflowering plants start flowering (making buds) after about 3-4 weeks, and are usually ready to harvest 2-3 months from germination. This is different from standard photoperiod strains, which need to receive 12-hour dark periods every day to start flowering and develop buds properly. Learn more about why growers put plants on a 12/12 light schedule.

For the most part, autoflowering buds are the same as photoperiod buds. Some of the newer autoflowering strains have buds that are indistinguishable from their photoperiod counterparts. But some autoflowering buds tend to be a bit leafy looking. Here are some examples of different autoflowering buds that are ready to harvest.

Auto Lemon OG Haze plant that’s ready to harvest

Black Cream Auto plants just before harvest

What If Buds Appear “Burned”?

This bud was too close to LED lights and got burnt, and is ready to harvest. Anytime you see a completely “burned” looking bud without any green leaves left, it’s time to harvest before the quality of the bud starts degrading further.

This plant also got burned from a too-close LED light. When a marijuana plant is damaged this extensively, harvest immediately to prevent further yellowing from spreading to the buds!

Nothing terrible happened to this plant, the grower just wanted to let it go a little longer. However, a plant is usually ready to harvest by the time the sugar leaves are turning yellow.

What About Trichomes?

Looking at the buds themselves is very important, but if you want to ensure the best potency, you also want to look at the glittery trichomes on your buds under a magnifier. By combining looking at the buds with looking at the trichomes, you can pinpoint the perfect time to harvest with any strain!

Read Full Marijuana Harvest Tutorial – with more information and additional tools to help you check if buds are ready

How to Dry and Cure Buds – this process is necessary to ensure a good taste/smell, to prevent headaches, and to increase potency compared to fresh buds

See a picture gallery of "ready to harvest" cannabis buds, with explanations for the buds that are weird or hard to tell!