Why are worms good for the soil?
Worms are nature's earthmovers. Worm tunnels help aerate the soil and keep it from compacting, so that the plant roots can easily work their way through. Worms eat all sorts of decomposing material, and once it passes through their system it is the best fertilizer money can't buy. (Well, I guess these days somebody's probably selling it, but it's so much better to have your own suppliers. Cheaper, too.) Worms help break up clay, and help add organic material to sandy soils. Worms are a gardener's best friend, and should be encouraged into your garden to add their magic to your soil. They like mulch, cool moist soil, and lots of dead material to eat - shredded leaves spread over your garden areas will bring them like a buffet. I always smile when I see lots of worms, because I know that means my soil is at it's best for my plants.