Soluble Fertilizers | Fast-Acting Nutrition for Plants – The Seed Supply

FREE Shipping to the USA!

Soluble Kelp Seaweed Powder

Soluble Kelp Seaweed Powder

1 review

Regular price From $ 10.00 USD

Regular price Sale price From $ 10.00 USD
Unit price per
Soluble Humic Acid Powder - Potassium Humates

Soluble Humic Acid Powder - Potassium Humates

2 reviews

Regular price From $ 7.50 USD

Regular price Sale price From $ 7.50 USD
Unit price per
SOP Ultra Fines 0-0-50: Premium Potassium Sulfate

SOP Ultra Fines 0-0-50: Premium Potassium Sulfate

Regular price From $ 15.00 USD

Regular price Sale price From $ 15.00 USD
Unit price per
Soluble Gypsum Powder – Premium Calcium Sulfate Dihydrate

Soluble Gypsum Powder – Premium Calcium Sulfate Dihydrate

Regular price From $ 15.00 USD

Regular price Sale price From $ 15.00 USD
Unit price per
Potassium Magnesium Sulfate KMS 0-0-21.5

Potassium Magnesium Sulfate KMS 0-0-21.5

Regular price From $ 16.00 USD

Regular price Sale price From $ 16.00 USD
Unit price per
7/11 Nitrogen & Calcium – Rapid-Acting Foliar Fertilizer

7/11 Nitrogen & Calcium – Rapid-Acting Foliar Fertilizer

No reviews

Regular price From $ 23.00 USD

Regular price Sale price From $ 23.00 USD
Unit price per
7-0-26 Nitrogen & Potassium – Fast-Acting Foliar Fertilizer

7-0-26 Nitrogen & Potassium – Fast-Acting Foliar Fertilizer

No reviews

Regular price From $ 21.50 USD

Regular price Sale price From $ 21.50 USD
Unit price per