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Phosphorus is a key element and as such, plays a role in both root and bloom development, which helps produce high-quality fruit and flowers.
Phosphorus helps plants take to new soil by boosting root development and with strong root development means plants will grow faster and be healthier because they can absorb more water and nutrients from the soil.

Langbeinite is a naturally mined crystalline mineral that supplies the water-soluble sulfate form of three vital plant nutrients: potassium, magnesium and sulfurs.

Marine-based alternative to traditional steamed bone meal and is a great source of organic phosphorus and calcium and wonderful for all flowering plants, trees and shrubs.

Down to earth bat guano mix is an all natural fertilizer with 7-3-1 formula and is listed by the Organic Materials Review Institute OMRI for use in organic production.


Silica increases root growth, boosts yield, and enhances crop quality. Simply silica improves a plant's natural resistance to environmental stresses, including heat and drought. Use simply silica as a soil drench or foliar spray once a week from start of vegetive growth throughout flowering and fruiting.

All in one 100% organic plant rooting supplement: Boosts soil quality and gives roots what they need to grow. Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems.

1. Roots Organics
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Roots Organics Seabird Guano Powder Fertilizer, 3-Pound
#adRoots Organics #ad - An excellent source of phosphate and calcium. Carefully sifted and processed to make it easy to work with. Encourages vigorous growth and is fast acting for quick results.More information #ad
Brand | Roots Organics #ad |
Manufacturer | Roots Organics #ad |
Height | 1.2 Inches |
Length | 11 Inches |
Weight | 3.15 Pounds |
Width | 7.5 Inches |
Part Number | 720990 |
Model | 720990 |
More information #ad
2. True Organic
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OMRI, True Organic Plant Foods, CDFA, for Organic Gardening, Seabird Guano 4lbs
#adTrue Organic #ad - Should be mixed into the soil or applied in spring & fall to dramatically increase both the amount and size of blooms throughout the flowering period for all indoor and outdoor plants. True organic seabird guano is a five pound bag of all natural plant food with a 6-12-0 NPK formula and is listed by the Organic Materials Review Institute OMRI for use in organic production.Phosphorus is a key element and as such, plays a role in both root and bloom development, which helps produce high-quality fruit and flowers.
More information #ad
Highly valued in organic farming as a great source of Phosphorous and slow release nitrogen for plants and soil microbes. Vegetables, tomatoes, melons & strawberries, along with all flowers will benefit from mid-season applications to improve yields, quality and flavor while also enhancing the beneficial bacteria activity in your garden soil. Phosphorus helps plants take to new soil by boosting root development and with strong root development means plants will grow faster and be healthier because they can absorb more water and nutrients from the soil.
Brand | True Organic #ad |
Manufacturer | True Organic #ad |
Height | 11.5 Inches |
Length | 7.75 Inches |
Weight | 4 Pounds |
Width | 4.25 Inches |
Part Number | R0015 |
Model | R0015 |
More information #ad
3. Down To Earth All Natural Fertilizers
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Down to Earth Organic Langbeinite Fertilizer Mix 0-0-22, 5 lb
#adDown To Earth All Natural Fertilizers #ad - It’s maximum chlorine content is less than 3. 0 percent, minimizing the potential for fertilizer burn, and it’s neutral pH does not alter soil activity. This standard grade langbeinite has a typical SGN of 95 and is an excellent source of readily available sulfur, potassium and magnesium.Langbeinite is a naturally mined crystalline mineral that supplies the water-soluble sulfate form of three vital plant nutrients: potassium, magnesium and sulfurs.
More information #ad
Down to earth langbeinite is a five pound box of all natural fertilizer with 0-0-22 formula and is listed by the Organic Materials Review Institute OMRI for use in organic production. Widely used on sensitive vegetables and fruit crops that require high fertilization rates but do not tolerate high levels of chlorine or soluble salts.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down to Earth #ad |
Height | 10.8 Inches |
Length | 3.5 Inches |
Weight | 5.25 Pounds |
Width | 8 Inches |
Part Number | 07852 |
Model | 07852 |
More information #ad
4. Down To Earth All Natural Fertilizers
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Down to Earth Organic Fish Bone Meal Fertilizer Mix 4-12-0, 5 lb
#adDown To Earth All Natural Fertilizers #ad - As one of the three big nutrients for plants, phosphorous plays a role in both root and bloom development, which helps produce high-quality fruit and flowers. The backbone of most of our fertilizer blends and contains a small amount of organic nitrogen and is an ideal fertilizer for new garden beds, perennials and bulbs.Marine-based alternative to traditional steamed bone meal and is a great source of organic phosphorus and calcium and wonderful for all flowering plants, trees and shrubs.
More information #ad
Phosphorus helps plants take to new soil by boosting root development and strong root development means plants will grow faster and be healthier because they can absorb more water and nutrients from the soil. Down to earth fish bone meal is a five pound box of all natural fertilizer with 4-12-0 formula and is listed by the Organic Materials Review Institute OMRI for use in organic production.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down To Earth #ad |
Height | 10.8 Inches |
Length | 3.5 Inches |
Width | 8 Inches |
Part Number | HGC723695 |
Model | HGC723695 |
More information #ad
5. Down To Earth All Natural Fertilizers
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Down to Earth Organic Bat Guano Fertilizer Mix 7-3-1, 2 lb
#adDown To Earth All Natural Fertilizers #ad - A good fertilizer for both early and mid-season booster applications and is the undisputed champion of all-natural fertilizers. Rich in readily available nitrogen, phosphorus and micronutrients and nearly the third of the nitrogen is water soluble, making it readily available to plants.Down to earth bat guano mix is an all natural fertilizer with 7-3-1 formula and is listed by the Organic Materials Review Institute OMRI for use in organic production.
More information #ad
Provides essential plant nutrition for vigorous vegetative growth and early fruit and flower development. Fast acting and highly effective when mixed into potting mediums, applied as a side dress or steeped to make a potent guano tea or foliar spray.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down to Earth #ad |
Height | 0.75 Inches |
Length | 16.25 Inches |
Weight | 0.3 Pounds |
Width | 7.25 Inches |
Part Number | 723640 |
Model | HGC723640 |
More information #ad
6. Roots Organics
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Granular, High Phos Organic Fertilizer, Roots Organics Seabird, 3 lb., 0-12-0 NPK
#adRoots Organics #ad - Approved for use as an Organic Input Material. This product is granular. Carefully sifted and processed to make it easy to work with, Roots Organics Seabird Guano encourages vigorous growth and is fast-acting for quick results. 0 - 12 - 0 npk, ca 20% derived from: 100% natural Seabird Guano.More information #ad
Available in both powdered and granular form. Roots organics seabird guano is an excellent source of phosphate and calcium. All our roots organics guanos have been carefully sourced for quality and harvested with habitat-friendly methods so you and your garden get performance with principles.Brand | Roots Organics #ad |
Manufacturer | Sunlight Supply Inc. #ad |
Height | 1.9 Inches |
Length | 11 Inches |
Weight | 3 Pounds |
Width | 7.5 Inches |
Part Number | GL56720930 |
Model | 720930 |
More information #ad
7. Supreme Growers
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Simply Silica 8oz Concentrate by Supreme Growers Potassium Silicate Liquid Fertilizer Promotes Growth of Strong Plant Tissues Improves Natural Resistance to Environmental Stresses Makes 47 Gallons
#adSupreme Growers #ad - It will not clog drippers. Simply silica is a liquid fertilizer formulated with potassium Silicate that promotes the growth of strong plant tissues. It is safe for resevoirs.Silica increases root growth, boosts yield, and enhances crop quality. Simply silica improves a plant's natural resistance to environmental stresses, including heat and drought. Use simply silica as a soil drench or foliar spray once a week from start of vegetive growth throughout flowering and fruiting.
More information #ad
Call our hotline at 614 745-1945 with any questions. Silica is a mineral supplied to plants as a nutrient that provides rigidity and structural endurance for crops. Simply silica is designed to supplement your existent nutrient program, not replace it. The 8oz concentrate of Simply Silica makes 47 gallons of ready to use product.Brand | Supreme Growers #ad |
Manufacturer | Supreme Growers #ad |
Part Number | 1 |
More information #ad
8. Bloom City
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Organic Root Stimulant, Rich with Microbes and Mycorrhizae by Bloom City, Quart 32 oz, Salmon and Kelp Formula
#adBloom City #ad - Simply the best choice for the conscientious grower. Nutrients from fish, kelp, humic acid, fulvic acid plus beneficial bacteria and myycorhizae: Loaded with nutrients to make your daily watering super beneficial for your plants health and nutrient absorption.All in one 100% organic plant rooting supplement: Boosts soil quality and gives roots what they need to grow. Bloom city chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems.
More information #ad
Highest quality, biggest yield: bloom city’s ingredients are better for plants, better for you, most potent, BEST VALUE, and better for the planet. Formulated and made in the usa: designed by botanists and plant chemists in Seattle, Washington. Can be used on houseplants, greenhouse plants and outdoor plants.Brand | Bloom City #ad |
Manufacturer | Bloom City #ad |
Part Number | root-32 |
More information #ad
9. The Andersons
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The Andersons BioChar DG Organic Soil Amendment, Covers up to 5,000 sq ft 10 lb
#adThe Andersons #ad - Ideal for seeding and composting applications on lawns, gardens, potted plants, flower beds, etc. Not for sale in California and Oregon. Biochar lasts in the soil for years, microbes, and water, beneficial bacteria, improving soil health over time with particles designed to attract nutrients, making all of these more available for plants.More information #ad
Builds rich, carbon-heavy soil that requires less fertilizer for plant growth. Easy-to-apply spherical, which allows particles to disperse with water, low-dust formulation -- Features DG Technology, uniform, moving immediately into the soil.Brand | The Andersons #ad |
Manufacturer | The Andersons #ad |
Part Number | BiocharFBA |
More information #ad