Collection: Soluble Fertilizers
Soluble fertilizers, also known as water soluble fertilizers (WSFs), are fertilizers that can be dissolved in water and applied directly to plants. They can be applied through drip irrigation or foliar application, which allows plants to absorb nutrients through their leaves and root systems.
Soluble fertilizers can be organic or made from pre-made chemicals. They can be useful for controlling the exact amount of nutrients available to plants, especially in soilless mixes. However, some say that soluble fertilizers release nutrients faster than plants can absorb them, resulting in most of the nutrients being wasted and becoming pollutants.
The maximum solubility of a soluble fertilizer is usually listed on the package label. Solubility refers to the maximum amount of fertilizer that can be dissolved in one gallon of water, and is a property of the mineral salts that make up the fertilizer.

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House & Garden®, Shooting Powder® Sachet (65 grams)
Vendor:House & GardenRegular price $7.99 USDRegular priceUnit price / per$15.99 USDSale price $7.99 USDSale -
Roots Organics® Uprising Bloom 3-6-4 Dry Nutrients (3 lbs.)
Vendor:Roots OrganicsRegular price $10.99 USDRegular priceUnit price / per$12.99 USDSale price $10.99 USDSale -
Roots Organics® Terp Tea Bloom 3-7-4, Dry Fertilizer (3 lbs.)
Vendor:Roots OrganicsRegular price $12.99 USDRegular priceUnit price / per$13.99 USDSale price $12.99 USDSold out -
Roots Organics® Terp Tea Grow 7-1-1, Soluble Fertilizer (3 lbs.)
Vendor:Roots OrganicsRegular price $12.99 USDRegular priceUnit price / per$13.99 USDSale price $12.99 USDSold out -
Down To Earth™, Langbeinite 0-0-21.5, All Natural Fertilizer, Single Ingredient (5 LBS.)
Vendor:Down To EarthRegular price $14.99 USDRegular priceUnit price / per$23.99 USDSale price $14.99 USDSale -
Hydroponic Research® +LIFE Powdered Probiotic (100 grams)
Vendor:Hydroponic ResearchRegular price $14.99 USDRegular priceUnit price / per$20.00 USDSale price $14.99 USDSale -
Advanced Nutrients®, Bud Blood®, Powder (40 g)
Vendor:Advanced NutrientsRegular price $15.99 USDRegular priceUnit price / per$19.99 USDSale price $15.99 USDSale -
Advanced Nutrients®, Big Bud®, Powder, 0-15-35, Bud Booster (130 grams)
Vendor:Advanced NutrientsRegular price $17.99 USDRegular priceUnit price / per$59.99 USDSale price $17.99 USDSale -
General Hydroponics®, MaxiBloom™, 5-15-14, Maxi Series™, Plant Food For Flowers (2.2 LBS.)
Vendor:General HydroponicsRegular price $18.99 USDRegular priceUnit price / per$21.99 USDSale price $18.99 USDSale -
Roots Organics® Elemental CalMag Powder, Soluble Fertilizer (3 lbs.)
Vendor:Roots OrganicsRegular price $19.99 USDRegular priceUnit price / per$23.99 USDSale price $19.99 USDSale -
FloraFlex® Nutrients Bulky B™ Bloom Stimulator (5 lbs.)
Vendor:FloraFlexRegular price $21.99 USDRegular priceUnit price / per$37.43 USDSale price $21.99 USDSale -
Gaia Green Organics® All Purpose 4-4-4 Organic Fertilizer, Granulated (2 kg)
Vendor:Gaia Green OrganicsRegular price $24.99 USDRegular priceUnit price / per$29.99 USDSale price $24.99 USDSold out -
Roots Organics® Uprising Bloom 3-6-4 Dry Nutrients (9 lbs.)
Vendor:Roots OrganicsRegular price $27.99 USDRegular priceUnit price / per$34.99 USDSale price $27.99 USDSale -
CX Horticulture® Head Masta 1L
Vendor:HortUs WholesaleRegular price $29.99 USDRegular priceUnit price / per$39.99 USDSale price $29.99 USDSale -
Roots Organics® Terp Tea Grow 7-1-1, Soluble Fertilizer (9 lbs.)
Vendor:Roots OrganicsRegular price $31.99 USDRegular priceUnit price / per$37.99 USDSale price $31.99 USDSale -
Roots Organics® Terp Tea Bloom 3-7-4, Dry Fertilizer (9 lbs.)
Vendor:Roots OrganicsRegular price $32.99 USDRegular priceUnit price / per$37.99 USDSale price $32.99 USDSold out -
FoxFarm® Cha Ching® Soluble Fertilizer, 9-50-10, For Late Flowering (1 lbs.)
Vendor:FoxFarmRegular price $34.99 USDRegular priceUnit price / per$57.61 USDSale price $34.99 USDSale -
Gaia Green Organics® All Purpose 4-4-4 Organic Fertilizer, Granulated (10 kg)
Vendor:Gaia Green OrganicsRegular price $34.99 USDRegular priceUnit price / per$59.99 USDSale price $34.99 USDSold out -
Sparetime Supply® Soluble Seaweed Powder 1-0-12 (2lbs.)
Vendor:Sparetime SupplyRegular price $34.99 USDRegular priceUnit price / per$49.99 USDSale price $34.99 USDSold out -
YaraMila™ 15-15-15 Hydro Prill Fertilizer (50 lbs.)
Vendor:YaraRegular price $34.99 USDRegular priceUnit price / per$49.99 USDSale price $34.99 USDSale -
Mad Farmer Mother Of All Bloom M.O.A.B. (1 kg)
Vendor:Mad FarmerRegular price $39.99 USDRegular priceUnit price / per$91.02 USDSale price $39.99 USDSale -
Mad Farmer Mother Of All Bloom M.O.A.B. (500 g)
Vendor:Mad FarmerRegular price $39.99 USDRegular priceUnit price / per$53.54 USDSale price $39.99 USDSale -
Roots Organics® Elemental CalMag Powder, Soluble Fertilizer (9 lbs.)
Vendor:Roots OrganicsRegular price $48.99 USDRegular priceUnit price / per$59.99 USDSale price $48.99 USDSale -
Maxsea® Bloom, Plant Food, 3-20-20, Soluble Fertilizer (6 lbs.)
Vendor:MaxseaRegular price $49.99 USDRegular priceUnit price / per$99.99 USDSale price $49.99 USDSold out -
Maxsea® Grow, All Purpose Plant Food, 16-16-16, Soluble Fertilizer (6 lbs.)
Vendor:MaxseaRegular price $49.99 USDRegular priceUnit price / per$99.99 USDSale price $49.99 USDSale -
Maxsea® Acid, Plant Food, 14-18-14, Soluble Fertilizer (6 lbs.)
Vendor:MaxseaRegular price $54.99 USDRegular priceUnit price / per$69.99 USDSale price $54.99 USDSale -
FoxFarm® Cha Ching® Soluble Fertilizer, 9-50-10, For Late Flowering (2 lbs.)
Vendor:FoxFarmRegular price $59.99 USDRegular priceUnit price / per$100.26 USDSale price $59.99 USDSale -
Grow More® All Purpose 20-20-20 Water Soluble Fertilizer (25 lbs.)
Vendor:Grow MoreRegular price $64.99 USDRegular priceUnit price / per$82.99 USDSale price $64.99 USDSale -
Grow More® Mendocino Plant Starter 10-52-10, Soluble Fertilizer (25 lbs.)
Vendor:Grow MoreRegular price $64.99 USDRegular priceUnit price / per$79.99 USDSale price $64.99 USDSale -
Grow More® Mendocino, Sea Grow, All Purpose 16-16-16 Soluble Fertilizer (25 lbs.)
Vendor:Grow MoreRegular price $64.99 USDRegular priceUnit price / per -
Advanced Nutrients®, Voodoo Juice® Plus, 1g Tablets (10 Tablets/Pack)
Vendor:Advanced NutrientsRegular price $69.99 USDRegular priceUnit price / per$69.99 USDSale price $69.99 USD -
Grow More® Mendocino All Purpose 20-20-20 Soluble Fertilizer (25 lbs.)
Vendor:Grow MoreRegular price $69.99 USDRegular priceUnit price / per$84.99 USDSale price $69.99 USDSale -
Down To Earth™, Agmino Powder, 14-0-0, Water Soluble Fertilizer (5 lbs.)
Vendor:Down To EarthRegular price $69.99 USDRegular priceUnit price / per$89.99 USDSale price $69.99 USDSale -
Advanced Nutrients®, Big Bud®, Powder, 0-15-35, Bud Booster (500 grams)
Vendor:Advanced NutrientsRegular price $79.99 USDRegular priceUnit price / per$99.99 USDSale price $79.99 USDSale -
Hydroponic Research® Veg+Bloom Dirty (5 lbs.)
Vendor:Hydroponic ResearchRegular price $79.99 USDRegular priceUnit price / per$120.00 USDSale price $79.99 USDSale -
Grow More® Mendocino Flower & Bloom 6-30-30, Soluble Fertilizer (25 lbs.)
Vendor:Grow MoreRegular price $79.99 USDRegular priceUnit price / per$113.99 USDSale price $79.99 USDSold out