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Cold-hardy varieties and everything you need to grow them

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Organic Growers Supply
Browsing "Single Ingredient Potassium"

Single Ingredient Potassium

ships year-round

K-Mag Granular Trio 0-0-22

A good source of immediate potassium for depleted soil and of magnesium where calcium is abundant. Alliums like its sulfur and potatoes like its quick boost of potassium. read more

ships year-round

Protassium+® Sulfate of Potash 0-0-50

Single Ingredient Potassium

NPK: 0-0-50. The most economical source of available potassium! Fine-grained texture. read more