The brown garden snail is the largest snail in Colorado. It is a native of Britain and parts of Europe and has been accidentally introduced to Colorado on nursery stock. It has been found in parts of Jefferson County. If you find some, and you might with all this rain, remember, it's edible and was originally introduced into California for escargot dishes. Perhaps Gardener Janet can prepare us a recipe!
Whitney Cranshaw, CSU Extension Entomology Specialist's article tell's us all about it!
Brown Garden Snail