Can adding earthworms to my flower garden & to my vegetable garden help in the overall growth of my plants?

I was basically going to buy nightcrawlers from a bait & tackle shop. But which types of worms should I use?

Lastly, I plan on using compost & a compost bin in my garden this year. What other natural/organic tips can I use for my garden?

Buying worms from a bait shop might be a little expensive. There are a number of sources on line such as Acme Worm Farm- http://www.acmewormfarm.com/nightcrawlers.html.

For information on organic gardening and compost, take a look at our web site's page on Organic Gardening-

http://www.gardening-at-the-crossroads.com/organic-gardening.html