Worm Castings last how long.....???

[stinkyattic]

i think of it more as an amendment to potting soil than food, because it's much lower in N than the plants will want and can take for regular feedings, so no need to worry about overkill with worm castings.

My potting mix is supersoil, perlite and wormcastings only. Drains well.

I see it as an amendment as well. My potting mix is Agway brand composted manure with humus, perlite, and worm castings. Good structure, drainage, and pH.