9 best good weed fertilizers

Choosing the right fertilizer for growing healthy and robust cannabis plants is crucial for a successful harvest. Here's what you should know about good weed fertilizers:

NPK Ratio: Fertilizers are labeled with three numbers representing the ratio of essential nutrients they contain - nitrogen (N), phosphorus (P), and potassium (K). For cannabis, during different stages of growth, you'll want different ratios. For vegetative growth, a higher N ratio (e.g., 2-1-1) is suitable, while for flowering, a higher P and K ratio (e.g., 1-2-2) is preferable.
Complete vs. Individual Nutrients: You can choose between complete fertilizers that contain all essential nutrients or individual nutrient supplements. Many growers prefer complete fertilizers because they simplify feeding routines, but some opt for precision by using separate nutrient solutions.
Organic vs.Synthetic: Organic fertilizers are derived from natural sources and provide nutrients slowly over time. They improve soil health and microbial activity. Synthetic fertilizers, on the other hand, provide nutrients more quickly but can potentially harm beneficial microorganisms. The choice between the two depends on your preference and growing method.
Slow-Release vs. Quick-Release: Some fertilizers release nutrients slowly over time, while others provide an immediate nutrient boost. Slow-release fertilizers can be convenient for long-term cultivation, while quick-release options are useful for addressing nutrient deficiencies quickly.
Micro-Nutrients: In addition to the primary NPK nutrients, cannabis plants require trace elements like calcium, magnesium, iron, and zinc. Ensure your fertilizer provides these essential micro-nutrients.
pH Levels: Cannabis plants prefer a slightly acidic pH level in the soil (around 6.0-6.8). Some fertilizers can affect soil pH, so it's essential to monitor and adjust pH levels accordingly.
Soil Composition: Consider the soil or growing medium you're using. Different soils may require specific nutrient formulations. Some fertilizers are designed for use in hydroponic or soilless systems.
Feeding Schedule: Most fertilizers come with recommended feeding schedules. Follow these guidelines closely to avoid over-fertilization, which can harm your plants.
Brand and Reputation: Research and choose reputable brands known for producing high-quality cannabis fertilizers. Reading reviews and seeking recommendations from experienced growers can be helpful.
Cost: Fertilizers can vary widely in price. While it's essential to stay within your budget, remember that investing in quality fertilizers can lead to healthier plants and a better yield.
Environmental Impact: Some growers may prefer environmentally friendly fertilizers that have minimal ecological impact. Look for products labeled as sustainable or eco-friendly if this is a concern for you.
Testing and Monitoring: Regularly test your soil or growing medium to check nutrient levels and pH. This will help you adjust your fertilization routine as needed.

In summary, choosing the right weed fertilizer involves considering factors such as nutrient ratios, organic vs. synthetic options, slow-release vs. quick-release formulations, and the specific needs of your cannabis plants. Always follow manufacturer instructions and monitor your plants' progress to ensure they receive the appropriate nutrients for healthy growth and a bountiful harvest.

Below you can find our editor's choice of the best good weed fertilizers on the market

Bud Breakfast | Organic Cannabis Fertilizer | for Seed to Harvest 16oz - by Good Stuff Grow Nutrients

Based on 7 reviews Check latest price

Product description

Bud Breakfast is the ultimate combination of nutrients for growing cannabis. This is an organic powder that is activated by water, specifically to provide cannabis plants with all the nutrients they need during every stage of growth. Once mixed into liquid form, Bud Breakfast will work with most watering systems whether you are growing in dirt or hydro. Bud Breakfast has been tested on many different strains of cannabis resulting in potent and healthy crops.

NUTRIENT COMPOSITION

Total Nitrogen (N) …………………... 5.4%

----------- Nitrate Nitrogen - 1.1%

----------- Water Insoluble Nitrogen - 4.3%

Available Phosphate (P2O5) ………………. 2.8%

Soluble Potash (K2O) ………………………. 8.4%

Calcium (Ca) ………………………….……... 6.5%

Sulfur (S) ………………………………………3.2%

Magnesium (Mg) ……………..………………1.0%

For helpful information, videos, application chart(s), grow tips, and our complete product line please visit GoodStuffGrow.com

The Ultimate Combination of Nutrients for Growing Cannabis.
Makes 90 Gallons of Liquid Fertilizer
Organic & Clean Green Certified
Works with most watering systems whether you are growing in dirt or hydro.
Bud Breakfast has been tested on many different strains of cannabis resulting in potent and healthy crops.

User questions & answers

Question:	How often do i water my flowering cannabis plants with Bud Breakfast
Answer:	Aerosol.

Mermaid Mend 14oz | Organic Fertilizer for Cloning and Transplanting Shock Elimination | by Good Stuff Grow Nutrients

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Product description

Mermaid Mend is a source of plant nourishment from the North Atlantic sea that triggers numerous beneficial plant responses; the most important being increased root development which can decrease plant shock from cloning and transplanting. Without Mermaid Mend it can take your cannabis plants 2-3 weeks to recover from transplant shock. With Mermaid Mend plants can be transplanted repeatedly without downtime. In addition, Mermaid Mend gives plants the resilience, health, and vigor they'll need to reach their genetic potential!

NUTRIENT COMPOSITION Soluble Potash (K2O) …………………………. 15.0%

For helpful information, videos, application chart(s), grow tips, and our complete product line please visit GoodStuffGrow.com

Decrease Plant Shock From Cloning and Transplanting
Makes 55 Gallons of Liquid Fertilizer. Powder formula won't deteriorate over time like liquid fertilizers do. Mermaid Medicine is completely water soluble so once dissolved it will not separate or settle.
Organic & Clean Green Certified
Gives plants the resilience, health, and vigor they'll need to reach their genetic potential.
With Mermaid Mend plants can be transplanted repeatedly without downtime. Without Mermaid Medicine it can take your cannabis plants 2-3 weeks to recover from transplant shock.

Outrageous Bud Bro 16oz | Organic Fertilizer for Bloom Enhancing | by Good Stuff Grow Nutrients

Based on 11 reviews Check latest price

Product description

Outrageous Bud, Bro is exactly the nutrient mix your cannabis plants want when transitioning from the vegetative to bloom stage. At this stage your weed plants require small amounts of phosphate when compared to their potash needs. As you transition from Bud Breakfast to the Outrageous Bud, Bro these nutrients will foster development of your highly desired trichomes.

NUTRIENT COMPOSITION

Available Phosphate (P2O5) ……………3.0%

Soluble Potash (K2O) ....…. ...................11.0%

Calcium (Ca) ………………………. ........11.0%

Sulfur (S) …………………………………..6.0%

Magnesium(Mg) …………………….…… 2.0%

Iron (Fe) ………………………………..… 0.9%

For helpful information, videos, application chart(s), grow tips, and our complete product line please visit GoodStuffGrow.com

*Package maybe different then pictured as we are switching packaging and artwork.

Bud Booster is exactly the special 0-3-11 nutrient mix your cannabis plants want when transitioning from the vegetative to bloom stage.
Makes 34 Gallons of Liquid Fertilizer. Powder formula means that the nutrients stay fresh; unlike liquid fertilizers that deteriorate over time.
Organic & Clean Green Certified
Easy to use, Outrageous Bud Bro provides the nutrients that will foster development of your highly desired trichomes.
Outrageous Bud, Bro includes both soluble and insoluble ingredients that are finely ground together and will suspend in water for a short period of time. While mixing and pouring it is important to keep the liquid agitated so that all nutrients make it into the soil. Doing so will ensure all the organic fertilizer ingredients are present and ready to be absorbed by your plants.

User questions & answers

Question:	Can this be used with organic soil grows
Answer:	The three numbers refer to the amount or percentage of nitrogen, phosphorous, and potassium in the meal. In this case there is 1 percent nitrogen and 2 percent potassium with no phosphorous.

The Old Farmer's Almanac Weed Barrier Paper with Fertilizer (Covers 150 Sq Ft)

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Product description

The Old Farmer's Almanac Weed Barrier Paper is infused with fertilizer to protect and feed plants for a full growing season. Designed for organic food crops, Weed Barrier Paper is excellent for use on flowers, shrubs, and home gardens too. Unlike black plastic or fabric weed barriers, The Old Farmer's Almanac Weed Barrier Paper is natural, organic and biodegradable. Weed Barrier Paper prevents weeds, conserves moisture, helps regulate soil temperature, and feeds your plants too. Since 1792, The Old Farmer's Almanac has helped America's farmers and gardeners with wise words, planting charts, garden guides, wholesome recipes, and advanced weather forecasts. Now The Old Farmer's Almanac furthers its mission with an innovative new range of natural lawn and garden products. American Science, Made in America.

OMRI Listed for use on organic crops, Weed Barrier Paper works great on raised beds, flower and vegetable gardens, edging, and anywhere weed barriers are needed.
Feeds and protects for up to 90 days. Conserves moisture while allowing water and additional fertilizers to reach soil and roots.
Made of high quality, biodegradable paper mulch infused with 5-0-0 Soy Protein Hydrolysate fertilizer.
No need to clean up! At the end of the season, environmentally friendly Weed Barrier Paper can be left to degrade naturally (enriching the soil for next year), or tilled into the soil to prepare for new planting.
Good for plants and safe for use around people and pets. Tack down edges or cover with soil or wood chips for a beautiful, manicured garden look.

Outrageous Bud Bro - Organic Cannabis Fertilizer for Bloom Enhancing 5 Lbs. - by Good Stuff Grow Nutrients

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Product description

Outrageous Bud, Bro is exactly the commercial nutrient mix your cannabis plants want when transitioning from the vegetative to bloom stage. At this stage your weed plants require small amounts of phosphate when compared to their potash needs. As you transition from Bud Breakfast to the Outrageous Bud, Bro these nutrients will foster development of your highly desired trichomes.

NUTRIENT COMPOSITION

Available Phosphate (P2O5) ……………3.0%

Soluble Potash (K2O) ....…. ...................11.0%

Calcium (Ca) ………………………. ........11.0%

Sulfur (S) …………………………………..6.0%

Magnesium(Mg) …………………….…… 2.0%

Iron (Fe) ………………………………..… 0.9%

For helpful information, videos, application chart(s), grow tips, and our complete product line please visit GoodStuffGrow.com

Commercial Bud Booster is exactly the special 0-3-11 nutrient mix your cannabis plants want when transitioning from the vegetative to bloom stage.
Makes 170 Gallons of Liquid Fertilizer. Powder formula means that the nutrients stay fresh; unlike liquid fertilizers that deteriorate over time.
Organic & Clean Green Certified
Easy to use, Outrageous Bud Bro provides the nutrients that will foster development of your highly desired trichomes.
Outrageous Bud, Bro includes both soluble and insoluble ingredients that are finely ground together and will suspend in water for a short period of time. While mixing and pouring it is important to keep the liquid agitated so that all nutrients make it into the soil. Doing so will ensure all the organic fertilizer ingredients are present and ready to be absorbed by your plants.

Good Stuff Grow 4 Pack | Complete Set of Organic Cannabis Nutrients for All Growth Stages

Based on 8 reviews Check latest price

Product description

Quit Wasting Money on Dozens of Prodcuts! Good Stuff Grow's 4 Pack Has Everything You Need to Grow Strong Healthy Plants From Seed to Harvest!

These Organic Clean Green Certified Nutrients Make 237 Gallons of Liquid Fertilizer and Are Designed Specifically for Cannabis.

Package Includes:

Bud Breakfast - Seed to Harvest Nutrient

Outrageous Bud Bro - Your Transition From Veg to Bloom Nutrients

Root Muscle - Root, Trichome, & Cloning Enhancer

Mermaid Medicine - Cloning/Transplant Shock Eliminator

For helpful information, videos, application chart(s), grow tips, and our complete product line please visit GoodStuffGrow.com

*Package maybe different then pictured as we are switching packaging and artwork.

Organic/Clean Green Certified
Makes 237 Gallons of Liquid Fertilizer
Only 4 Products
Micro Nutrients Built In
Indoor or Outdoor Use

Eco Organics My Weed Minerals Ionic Trace Micro Nutrients for Growing Marijuana. ½ Gallon (64oz) Concentrate Nutrients for Growing Cannabis Plants.

Based on 125 reviews Check latest price

Product description

My Weed Minerals is complex of ionic elements extracted from the ocean for use on medical marijuana to provide the essential mineral nutrients for cannabis plants. These minerals are necessary for trichomes to produce high potency in weed. This product stimulates bigger roots, faster growth and insures a successful grow every time regardless of the NPK you want to use - it works with all NPK fertilizers to make them work better.

Contains the critical divalent ionic minerals essential for metabolic synthase transformation in trichomes for higher potency in weed.
Contain 62 nutrients for growing cannabis and works with all NPK fertilizers to make them work better.
Works in all cloning devices to stimulate rapid, thick root growth and will not clog spray emitters.
Activates plant genetics in late phase growth to produce larger buds and tops.
Used as a foliar spray during late phase growth to stimulate thicker bud growth, to produce more trichomes and to make stronger weed.

User questions & answers

Question:	I didn't really look at the instructions and started foliar spraying first week of flowering, could that be an issue? Appreciate any responses
Answer:	No, it's good to use as a foliar spray during flowering to get it into the leaves when growing trichomes, the leaves need these ionic elements to synthesize cannabinoids.
Question:	Is this suitable for vegetable gardens? How much do you use per gallon water
Answer:	Yes, this mineral product is ideal for all types of vegetable gardening indoors, outdoors and in containers. Mix 10mls (2 teaspoons) per gallon of water.
Question:	Is this shipped in a box
Answer:	Yes in the jug then packaged in a box and then shipped to me ups. U hope this helps.
Question:	Do I use everytime I water my plants
Answer:	It's normally used with every fertilizer application but you can use it when you water your plants since it has no nitrogen and therefore safe to use daily.

Organic Fertilizer - Granular - The Good Earth Organics Boost 6-6-3 (5 lbs)

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DERIVED FROM: Fish bone meal, feather meal, alfalfa meal, earthworm castings, shrimp meal, soybean meal, crustacean meal, sulfate of potash, gypsum, langbeinite, glauconite, rock phosphate, Peruvian seabird guano, kelp meal, glacial rock dust.
APPROVED and Certified for Organic Growing
FOR revitalizing or refreshing all your soil and nitrogen loving plants
To use, simply mix it into or top-dress your soil! Use 1/2 - 1 whole pound of Boost per cubic feet of soil. You can also add Boost to your Compost Tea!
GUARANTEED ANALYSIS 6-6-3

Scotts 21605 Lawn Food for New Grass, 5,000-sq ft (Not Sold in Pinellas County, FL) 5M Turf Builder Starter, 5,000 sq

Scotts

Based on 4 reviews Check latest price

Product description

With Scotts Turf Builder Starter Food for New Grass, your seedlings will benefit from a combination of nutrients that will satisfy their special needs. The Starter Food gives new grass a quick start by promoting faster root and blade development, and the 24-25-4 fertilizer ratio provides the ideal nutrient balance for your developing lawn. Improves seeding results while also being great for sod and grass plugs. New grass grows 70% thicker AND 35% quicker versus unfed grass, which will have you on your way to the lawn you've always wanted. Faster. Safe for any grass type, whether you're planting new grass, starting a new lawn, or reseeding an existing one.

Grows new grass 70% thicker, 35% quicker versus unfed grass
Improves seeding results--also great for sod and grass plugs
24-25-4 fertilizer ratio provides the nutrients for developing lawns
Safe for any grass type, whether you're planting new grass, starting a new lawn, or reseeding an existing one
Covers 5,000 sq. ft.
Not for sale in Pinellas County, FL

User questions & answers

Question:	My husband did not prepare soil correctly when he was patching 2 holes so the grass seed we planted is not doing well. Will this help
Answer:	If you look at the listing you will see that there are 2 different option offered at 2 different prices. I bought the 20' option and it comes with 2 10' sections and yes it had endcaps, look at the end of the box in the picture.
Question:	can i fertilize new sod in hot weather with this
Answer:	Yes. They have the connectors included. We have 2 connected. We've even had 3 connected.
Question:	Will it assist new grass seed growth if i mix this turf builder lawn food in with the seed, then spread mixture
Answer:	Rippled like dryer hose
Question:	Will this tend to stimulate weed growth initially too? Our weeds seem worse. No rototilling was done before seeding with our grass seed
Answer:	This hose fits with every bayonet type connector that i have. Various brands but I don't know exactly what ones I have.

Product features

Improves Seeding Results!

Scotts Turf Builder Starter Food For New Grass feeds to help new grass take root and grow. It grows new grass 70% thicker and 35% quicker.

Safe For Any Grass Type

Whether you’re planting new grass, starting a new lawn, reseeding an existing one, or installing sod, sprigs or grass plugs, Scotts Turf Builder Starter Food for New Grass is safe to use on any grass type.

How To Care For Your New Grass

After you’ve planted your new grass, it’s important to make sure you water it once a day or as needed to keep the soil moist. Then make sure to continue feeding your lawn so it maintains a thick, green appearance. Finally wait to mow the area until the new grass is at least three inches tall.