Garden worms and composting worms are two totally different species. Composting worms (aka red wigglers) will die if placed in soil. Do NOT put Composting Worms in your garden.
Gardens need earthworms (like nightcrawlers) to aerate the soil and breakdown some dead organic matter. This type of worm can survive winter freezes and summer heat waves. For in-soil burrowing you want an Anecic species.