Adding crushed egg shells (or other calcium sources) can help stimulate worm reproduction http://ow.ly/i/GF3s
Adding crushed egg shells to compost
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Compost
I’ve been using Milorganite Fertilizer
I've been using Milorganite Fertilizer for over a decade to fertilize just about everything in my outdoor landscape...
One lb of composting worms worth $15 – $40
One lb of composting worms is estimated to consist of approximately 1000 individuals, and can cost anywhere from $15...