Potassium Nitrate (KNO3) Supplies


Potassium Nitrate (KNO3) Supplies

Also known as saltpeter, used to soften the coat of many seeds in order to expedite germination. Recommended for brassicas, eggplant, peppers, tomatoes, basil, endive, radicchio, and most flower seed. Comes in fine granular form. Dilute ½ tsp in 1 qt water. Use as a pre-soak for seed or to water seedling flats. 10g packet contains 2 tsp. Note: Not approved for certified-organic use.

3999 Potassium Nitrate (KNO3)
Item Discounted
A: 10g for $2.50   

Additional Information

Germination Testing

For the latest results of our germination tests, please see the germination page.

Our Seeds are Non-GMO


All of our seeds are non-GMO, and free of neonicotinoids and fungicides. Fedco is one of the original companies to sign the Safe Seed Pledge.