Top 10 Best Bud Food & Bloom Booster Fertilizers
The most effective flowering fertilizers for big buds (best bloom boosters). Get the high yields & save money by knowing what they’re made of. Best nutrients for flowering cannabis.
Organic fertilizers are made of natural ingredients. The highest concentration of plant nutrients come from mineral powders, manures and animal parts. Seaweed and molasses are also used in organic bud foods to promote beneficial bacteria and aide in growth processes. The presence of mycorrhizal fungi can help plants absorb organic nutrients like Phosphorus easier.
Overview: A lot of “secret” bud enhancers for sale are simply kelp derivative and soluble potash. Seaweed-derived products have been widely used in marijuana fertilizers for their growth stimulating compounds. Save money on expensive liquid formulas by using kelp meal like Maxicrop, made of harvested Norwegian kelp (Ascophyllum nodosum).
How it benefits flowering: NPK 0-0-17. A natural source of potassium and powerful biostimulants, Maxicrop contains more than 70 minerals, micronutrients, amino acids and vitamins to help with bigger, more prolific blooms. Studies have shown that Maxicrop application increased plant root growth by 53–63%. It is also used for cloning and transplanting solutions due to the presence of vitamin B12.
Application: Dissolve 3 tablespoons of Maxicrop powder per gallon of water. Suitable for all cultivation methods. Don’t spray buds, it will stick.
Jobe’s Organics Bulb Food Fertilizer
Overview: Jobes Organics Bulb Fertilizer granular plant food is made from an all-natural blend of bone meal, poultry manure and sulfate of potash. It comes loaded with beneficial bacteria and Endomycorrizae.
How it benefits flowering: NPK 3-5-4. The Archaea is a unique beneficial micro-organism that plays a role in soil carbon and nitrogen turnover. Calcium and Magnesium help strengthen plants and promote photosynthesis—combined they make an effective bud hardener.
Application: Mix in 1 ½ cups of fertilizer granules per each 10′ of soil area for transplants or 1 ½ tablespoons per each 4″ of area for seedlings.
Overview: Vegan plant food. BioThrive is packed with a myriad of organic substances including alfalfa meal, cane sugar, copper sulphate, glacial rock powder, iron sulphate, kieserite, manganese sulphate, molasses, plant extracts, potassium sulphate, rock phosphate, sodium borate, sodium molybdenate, soybean meal and zinc phosphate.
How it benefits flowering: NPK 2-4-4. Bio Thrive contains the essential nutrients with a hearty dose of carbohydrates (sugars) known to stimulate beneficial microbial activity.
Application: Dilute 4 teaspoons of BioThrive per gallon of water. This liquid fertilizer is convenient for all types of growing from hydroponics to in-the-ground soil application.
Happy Frog Bulb Food
Overview: FoxFarm’s Happy Frog dry fertilizer is a mix of granular organic bud food ingredients such as bone meal, bat guano, and kelp meal. It’s alive with beneficial soil microbes and mycorrhizal fungi inoculant that expand root development, helping plants feed more aggressively.
How it benefits flowering: NPK 3-8-8. Happy Frog Bulb Food adds humic acid (a natural byproduct of organic matter decomposition) as an organic chelating agent to help release the long-term nutrients contained in this fertilizer for plant absorption.
Application: Follow dosage instructions on label for plant size. It can be mixed into potting mix before final transplant, probed into the root system or layered onto the topsoil.
Dr. Earth Organic Bud & Bloom Fertilizer
Overview: Dr. Earth Organic Bud & Bloom fertilizer is made from a blend of fish bone meal, alfalfa meal, feather meal, soft rock phosphate and mined potassium sulfate. Includes beneficial soil microbes and Mycorrhizae.
How it benefits flowering: NPK 3-9-4. This well-rounded dry fertilizer is suitable as a stand-alone flowering supplement.
Application: Use roughly 2 cups per inch of trunk diameter. Follow the label directions for detailed guidelines. Mix it into soil medium during transplants, apply as a probe around the roots or use as a topdress.
Synthetic fertilizers are made of various elemental compounds, mostly derived from the chemical chelation of minerals. The chelation process transforms these minerals into nutrients that are easily absorbed by plants.
Synthetic nutrients work best in hydroponics, aeroponics or in an easy-flush, low-retention potting mix like 50% perlite, 50% vermiculite.
Jack’s Classic Blossom Booster
Overview: J R Peters Jack’s Classic Blossom Booster provides the essential NPK nutrients for flowering plants—plus micronutrients—all in an inexpensive water-soluble powder.
How it benefits flowering: NPK 10-30-20. This classic 1:3:2 nutrient ratio has proven to be the standard for blossom enhancers. A lot of hydro growers are ditching the expensive bottled nutrients and switching over to Jack’s to save money.
Application: One tablespoon of powder per gallon of water. Can be used in any grow setup including hydroponics and aeroponics.
Overview: Flower Fuel is a heavy-duty, high PK blossom booster that contains over 40 ingredients: n utrients, vitamins, hormones, amino acids, essential organic components and every single micro and trace element.
How it benefits flowering: NPK 0-39-25. This type of high PK bloom booster is used throughout flowering to promote loads of resinous bud sites that develop into big buds right down to the stem.
Application: ¼ teaspoon per gallon of water. The 250 g container treats 200 gallons of water. Suitable for any soil, coco, hydroponic or aeroponic system.
Grow More Hawaiian Bud
Overview: A hard-hitting nutrient “boom!” for plants, Grow More Hawaiian Bud is packed with extremely high amounts of phosphorus, a hearty dose of potassium, a little nitrogen and chelated micronutrients.
How it benefits flowering: NPK 5-50-17. Potent PK fertilizers like Hawaiian Bud will help plants stack up heavily with multiple bud sites. This contributes to heavy yielding, big bud harvests when applied with caution.
Application: Suggested use varies at ¼–1 teaspoon per gallon of water. Be careful of burning plants by overfeeding.
FoxFarm’s Liquid Bloom Trio
Overview: The liquid bloom trio by FoxFarm are very popular fertilizers in the cannabis growing community. Big Bloom is all organic while Tiger Bloom and Grow Big contain synthetic nitrates and phosphates.
How it benefits flowering: These three bottles are sold together in a fully-balanced bud flowering formula. They contain readily available nutrients combined with organic ingredients and active microbes.
Application: 2–4 teaspoons per gallon of water. FoxFarm liquid fertilizers can be used in soils, pots, hydroponics and aeroponics.
Osmocote Smart-Release Plant Food
Overview: Most synthetic fertilizers are readily available, meaning they do not last long after application and need to be reapplied regularly for best results. Osmocote Smart-Release Plant Food is a controlled release granule fertilizer that feeds plants for up to 4 months.
How it benefits flowering: NPK 14-14-14. Balanced, long-term synthetic fertilizer high in nutrients. Each granule is coated with a resin that controls nutritional release. A favorite of old-school guerilla growers.
Application: For 4″ plants 1 teaspoon worked into topsoil or mixed into potting medium.
What Nutrients Does Cannabis Need to Grow?
Nutrients are used like food by plants. Cannabis requires large amounts of mineral nutrients to compose its leaves and dense flowers. The best nutrients for cannabis are in fact the nutrients which are used by the plant to support growth.
- Well-fed cannabis plants are green and healthy, which can lead to increased flower production and higher yields of bigger buds. Well-fed plants have a stronger immunity to disease than underfed plants.
- Underfed cannabis plants are often slow to grow, stunted, yellowing and frail. The buds develop sparsely and produce a lower quality and yield than well-fed plants. Underfed plants have a weak immune system due to lack of nutrients.
There are six major nutrients that cannabis plants require to grow—three of which are obtained from the air and water:
- Carbon Dioxide (CO2) – Plants simply absorb CO2 from the air, combining it with water and light, to make carbohydrates—a process more commonly known as photosynthesis.
- Hydrogen (H) – Hydrogen is a part of water ( H2O). As plants absorb water, they split the water molecules into hydrogen and oxygen using the energy from the sun.
- Oxygen (O) – Along with what has been described above, plants consume oxygen through their pores—even at night. This is what’s called respiration. Respiration combines oxygen and the food created during photosynthesis to produce usable energy for plants.
The other three nutrients are Nitrogen (N), Potassium (P) and Phosphorus (K). These nutrients are mostly obtained though a plant’s roots but can also be absorbed through tissue (i.e. foliar feeding).
Major Nutrients (N-P-K)
What are the three numbers labeled on fertilizers?
NPK (short for Nitrogen, Phosphorus and Potassium) are the major nutrients that plants absorb though their roots or vascular tissue. NPK are the three numbers you see labeled on the front of commercial fertilizers.
The numbers represent the percentage of a nutrient a fertilizer is made of. For example, a 50-kg bag of 12-24-12 fertilizer is composed of 12% N, 24% P, and 12% K. To figure out how much K that is you can multiply the weight by the percentage: 50 kg x 0.12 = 6 kg of K.
- Nitrogen (a gas) is a major component of amino acids (the building blocks of proteins) and chlorophyll (the energy substance made by plants through photosynthesis). Nitrogen is the most utilized nutrient of a plant’s life-cycle, especially during its early stages of growth.
- Organic sources of N are plant litter, compost, manures, blood meal, feather meal, etc.
- Synthetic derivatives of N include formulations of urea and ammonium nitrates.
Using Nitrogen for flowering cannabis:
High nitrogen fertilizers have a pronounced effect on cannabis plants, often triggering vertical growth. This is why only moderate levels of nitrogen are applied to blooming cannabis plants in order to keep their buds hard, dense and compact. Cannabis fertilizers with a high ratio of nitrogen are usually ‘veg’ nutrients, intended for the early stages of growth.
- Phosphorus (a mineral element) is a component of the complex nucleic acid structure of plants, which regulates protein synthesis. It is important in cell division and development of new tissue, also associated with complex energy transformations in the plant. Phosphorus lets plants use the energy harnessed by photosynthesis to drive its metabolism.
- Organic sources of P include soft rock phosphate, bat guano, steamed bone meal, fish bone meal, and crushed granite.
- Synthetic derivatives of P are made by treating rock phosphate with either sulfuric acid or phosphorus acid.
Using Phosphorus for flowering cannabis:
High phosphorus availability to plants can lead to additional flower (bud) sites and a healthy root system. The most critical time for cannabis plants to utilize phosphorus is during the beginning of their blooming process (first white hairs), as this is when a big energy change happens in the plant. Cannabis fertilizers with a high ratio of phosphorus are often used as flowering nutrients, meant for the mid–late stages of growth.
- Potassium (a mineral element) triggers the activation of different growth-related enzymes important in many chemical processes taking place during flower production. It also regulates the opening and closing of stomata (pores) during photosynthesis, in part controlling CO2 uptake. Potassium is attributed to playing a major part in the absorption and movement of water, nutrients, and carbohydrates in plant tissue.
- Organic sources of K include soluble potash (ashes), manures, compost, molasses and kelp meal.
- Commercially-used K like muriate of potash and sulphate of potash are salts that make up part of ocean saline deposits.
Using Potassium for flowering cannabis:
Potassium is a catalyst for carbohydrate metabolism, so when you want your marijuana plants to pack on the carbs, high levels of K are important. Potassium rivals nitrogen as the nutrient absorbed in greatest amounts by plants. It’s best to increase K levels during the midst a plant’s flowering cycle, healthy amounts of potassium will lead to hard, thick and heavy bud yields. Cannabis fertilizers containing a high ratio of potassium are usually flowering nutrients, used in the mid–late growth stages.
Minor and Micro-Nutrients
Minor and micro-nutrients are essential for healthy plant growth, just used in smaller amounts by plants hence the name.
There are three nutrients classified as minor nutrients. These are:
- Calcium (Ca) – has a regulating effect in the cells and contributes to the stability of the plant, important in the development of cell walls.
- Magnesium (Mg) – is a building block of chlorophyll, essential to the process of photosynthesis. Without magnesium, plants cannot process sunlight.
- Sulfur (S) – is used in the formation of amino acids, proteins, and oils. Sulfur helps develop and activate different vitamins and enzymes.
Seven elements are needed in tiny amounts, these are dubbed micronutrients.
- These include boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn), nickel (Ni) and chloride (Cl).
- Being deficient in any of these micronutrients can impair growth.
What are Effective Flowering Fertilizers?
The best bloom boosters, bud foods and flower fertilizers are terms for the right nutrient additives meant to be used when a plant is producing flowers (buds). These nutrients are available to plants in the form of organic material (organic fertilizers) or are derived though chemistry procedures (synthetic fertilizers).
What do the best bloom fertilizers have in common?
- High proportions of Phosphorus (P) and Potassium (K), to maximize bud formation & growth-related enzymes in the plant.
- Low proportions of Nitrogen (N), to prevent bud stretching.
- Calcium (Ca) and Magnesium (Mg) are utilized to aid in dense flower clustering, along with other minor nutrients, micronutrients, and trace minerals.
Cannabis Fertilizer Ratio
NPK ratio recommendations for crops are typically provided to farmers via a university extension office. As a rule of thumb, cannabis may follow similar NPK guidelines as those given for tomatoes.
A high-N starter fertilizer is provided during the early growth (veg cycle) to promote vigorous growth while a high-PK bloom fertilizer is given during the later growth (flowering cycle) to support budding.
Cannabis growers tend to ween off nitrogen as the plant gets closer to harvest time. For example, a low-N, high-PK fertilizer near 1:3:2 ratio (2-6-4, 4-12-6, etc.) will be used for early and mid flowering cycle while a PK-only fertilizer (0:1:1 or 0:3:2 NPK ratio) is applied towards the end of flowering.
Organic vs. Synthetic Nutrients
- Organic cannabis fertilizers contain both readily available and long-term nutrient sources. A thriving microbial ecosystem will help plants access these nutrients faster.
- Synthetic cannabis fertilizers are readily available nutrients (with the exception of controlled-release fertilizer). These contain chemically chelated nutrients for immediate absorption by plants.
Cannabis Fertilizer Burn
Overapplication of fertilizer nutrients on cannabis plants can lead to “fertilizer burn” or “tipburn”—a desiccation of plant tissues seen as a leaf scorching, due to the osmotic stress caused by over fertilizing.
Avoid fertilizer burn by following the recommended application guidelines on fertilizer product labels. Cannabis plants that show signs of fertilizer burn should be ‘flushed’ with a long watering to rid excess nutrients from the root zone.
When applying high amounts of fertilizer it’s important to take into account the possibility of a nutrient lockout. This can occur from pH imbalance or excess nutrient buildup. Buildup often happens in mediums that can not be flushed clean of P, as this nutrient has a tendency to cling to other particles in soil.
When too much P is present in soil it binds up calcium, copper, iron, magnesium and zinc making these nutrients unusable. Excess P also has harmful effects on beneficial soil organisms such as mycorrhizal fungi.
Compost and Worm Castings as Fertilizer?
There are benefits to using organic matter in soil like increasing water and nutrient holding capacity of the soil, improving soil structure and promoting beneficial microbes.
Compost is often analyzed as a 1-1-1 dilutant fertilizer. However, all compost varies in composition. The nutrient profile of compost depends on what was used to make it.
Worm casting compost made with egg shells (calcium) and banana peels (potassium) are a great DIY organic bud food that you can make at home.
Best Fertilizer for Cannabis Buds Shortlist
|Maxicrop||Organic||0-0-17||VIEW PRICE ►|
|Happy Frog Bulb||Organic||3-8-8||VIEW PRICE ►|
|Biothrive Bloom||Organic||2-4-4||VIEW PRICE ►|
|Jobe’s Organics Bulb Food||Organic||3-5-4||VIEW PRICE ►|
|Dr. Earth Organic Bud & Bloom||Organic||3-9-4||VIEW PRICE ►|
|Jack’s Blossom Booster||Synthetic||10-30-20||VIEW PRICE ►|
|Flower Fuel||Synthetic||0-39-25||VIEW PRICE ►|
|Hawaiian Bud||Synthetic||5-50-17||VIEW PRICE ►|
|Liquid Bloom Trio||Mixed||Mixed||VIEW PRICE ►|
|Osmocote||Synthetic||14-14-14||VIEW PRICE ►|
24 thoughts on “Top 10 Best Bud Food & Bloom Booster Fertilizers”
The organic foxfarms kind works good with the maxicrop.
I agree Dino, Personally a big fan of the Happy Frog fertilizers from Fox Farm, and good ol’ Maxicrop… Maxicrop, or Norwegian sea kelp is a great trace minerals fertilizer/supplement with a little bit of potassium as well. I have seen times personally where a cannabis plant is not growing with the optimum health and vigor, then simply maxicrop (sea kelp) was supplemented to the weed plant and in a matter of hours that plant’s color had changed to a deeper green and had visually gained vigor, eventually flowering and finishing up into some heavy yielding, big-budded chronic. Sometimes the small things may be overlooked in certain soils, adding sea kelp into your soil or onto your plant(foliar feeding) is a reliable way to ensure that hungry cannabis plants get the nutrients they need to grow big and yield hard.
The most effective flowering fertilizers for big buds (best bloom boosters). Get the high yields & save money by knowing what they're made of. Best
Rock Resinator vs Big Bud vs Massive Bloom Formulation
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Rock Resinator vs Big Bud vs Massive Bloom Formulation
Bloom Boosters For Big Chunky Buds
Most fertilizers that are recommended for vegetative growth are rich in nitrogen and ideal for creating foliage, including stems, stalks and lush green leaves suited for proper photosynthesis.
A good bloom booster like Rock Resinator, Big Bud, or Massive Bloom Formulation, on the other hand, is packed with phosphorous, the single best nutrient for encouraging a plant to produce large, resinous, chunky buds.
The best time to apply a bloom booster to a flowering plant is right when the buds begin to form.
When picking the right bud booster for your flowering cannabis plants, first decide if you want an if you’re alright with a bit of assistance from science and nature. Then consider concentration levels. Certain bloom boosters might be too potent. Don’t burn a plant you’re trying to help by exposing it to too much phosphorous. Massive Bloom Formulation recommends you to dial back your base food about 20 percent. Which will result in some overall savings.
Bloom boosters can help your cannabis plants grow faster and to produce larger, tastier buds. A lack of potassium will directly effect the end yield. Phosphorous is necessary because it is a component of every living cell and is involved in key plant functions such as energy transfer, photosynthesis and nutrient movement throughout the plant.
ROCK RESINATOR 0-7-8
How does this stuff really work? Basically, it’s offering a kick of phosphorus and potassium that are higher than normal levels in a basic fertilizer. N-P-K = 0-7-8. If chemical plant growth regulators (PGR’s) are a concern for you, the manufacturer Rock Nutrients claims that it doesn’t contain any. Like most PK spikes it’s suitable for all grow systems and media.
This product has a good reputation. Plus it smells nice.
Resinator is a revolutionary flower enhancer that will dramatically increase essential oil production and flower mass. Resinator provides the highest quality soluble phosphorus and potassium for translocation to flowering sites.
Advanced Nutrients Big Bud is a bloom booster supplement that makes your buds larger and more potent crop. What’s inside the bottle is a precise combination and ratio of phosphorus potassium, carbohydrates, fulvic acid and L-Amino acids your plants need for the most rapid, and impressive bud formation.
Recently new and improved, Advanced Nutrients has a loyal following for many growers.
MASSIVE BLOOM FORMULATION
Considered the worlds best flowering additive, Massive is the flagship product of Green Planet Nutrients. A high performance organically derived flowering cycle nutrient, enhanced with all the necessary micro elements including the naturally occurring hormones, to increase flower size, taste, faster cell division, healthier, more colourful, larger crop and yields.
Growers rave about how well Massive Bloom Formulation works and it is very common for growers to report increases in dry weight of over 30%.
This formula incorporates naturally occurring gibberellic hormones that are designed to increase inter-nodal spacing allowing more room for the buds to swell to their full potential. After the spacing of the internodes or when flower sites have been established, the components in Massive Bloom Formulation work aggressively to produce and transport vital fluids and cell building materials to the flower sites creating truly massive stacked flower clusters full of aromatic essential oils.
Massive contains L-Form Amino Acids. These are important as they are the building blocks of protein. Only L-form amino acids are assimilated properly by plants. L-amino acids help to increases chlorophyll concentration leading to higher rates of photosynthesis. They can also reduce cannabis plant stress by strengthening cell walls.
Vitamins – There is a specially formulated vitamin profile designed to reduce environmental stresses and to stimulate essential metabolic processes as well as allow the flowers to reach peak maturity and maximum density.
You may have heard of triacontanol. This is an alcohol based sugar found in high concentrations in bees waste and alfalfa. It has a wide range of effects, stimulating the natural production of plant hormones involved in flowering. Green Planet uses a 3 day process to extract this powerful substance from the bees waste while others use cheaper sources.
Green Planet is known for using the highest quality raw ingredients creating the cleanest nutrients on the planet.
If that isn’t enough Massive also has a blend of compounds that bind to a series of enzymes to speed up the plants metabolism and to allow the conversion of the active components.
Unique Carbohydrate Blend – Dextrose, arabinose, xylose, glucose, fructose, maltose, are just some of the carbohydrates in Massive Bloom Formulation. External sources of carbohydrates allow the plant to focus its energy on flowering and essential oil production instead of taxing itself trying to produce food.
Low Molecular Weight Humic Acid – Also known as fulvic acid. Fulvic acid stimulates enzyme production critical for plant functions. One of the most important functions of Fulvic acid is its ability to transport the other vital components of massive bloom formulation and flowering materials into the cells where they are needed most.
Chelated Mineral Profile – Massive Bloom Formulation contains a complete 100% chelated micro nutrient and mineral profile such as iron, zinc, copper, manganese, cobalt and molybdenum to help support your actively growing flowers.
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