Member-owned cooperative since 1978

Cold-hardy varieties and everything you need to grow them

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Organic Growers Supply
Browsing "Worm Castings and Frass"

Worm Castings and Frass

ships year-round

Superworm Frass

NPK: 2-2-2. 16% Chitin. Nourishes chitin-feeding bacteria and fungi, which in turn devour gnat eggs and root-feeding nematodes. Also fortifies plants’ cell walls, and fosters healthy blooms. read more

ships year-round

Worm Castings

NPK: 0.5-0.5-0.3 apx, plus trace minerals. Worm castings limit plant disease and have beneficial effects including enhanced mycorrhizal activity and the suppression of parasitic nematodes. read more