James:
One thing that I’ve uncovered in my research is that while composting worms are fine if you simply want compost. However, the red wrigglers commonly used for composting are not effective as a worm for your garden [beds]. Their primary problem is that they prefer the top 2 or 3 inches of soil. As a result your soil is not fully aerated.
After a lot of searching I found a supplier that provided a mix of three worms types, each with different characteristics so that garden soil is serviced top to bottom. We mixed several yards of mulch into our soil to help prepare it but we’re the only yard in the neighborhood with worms on the sidewalks after a rain.
The first year we bought eggs from one vendor who no longer offers the product. The next year we bought from these folks. Regards, – Sherman W. Montana