Answer: What a great project! I'm glad we can be a small part of it. First let me suggest that you find out what sort of worms are native to the site, and first work to encourage their numbers to increase. You can also augment their numbers with purchased stock of the same species. "Red wigglers" is the name given to a couple of different species (Eisenia fetida, E. andrei, and Lumbricus rubellus), which prefer living in decaying matter at the soil surface. Actual soil-dwelling species common in the northeast include Lumbricus terrestris (nightcrawlers), Aporrectodea turgida, A. trapexoides, A. tuberculata, Drndrobaena octahedra, Dendrodrilus rubidus, L. rubellus, and Octolasion tyrteum.
Let me refer you to the on-line forum for Worm Digest
for more specific information on where to source worms, and how to introduce them to your area. Best of luck!
Q&A Library Searching Tips