I grabbed this on sale late last summer to fill a shady part of my garden under the monster rose bush and lilac tree. This spring when the snow melted away and I was examining the grey soggy mess that is my garden, I was very pleasantly surprised by some green: The sweet woodruff either never lost its green, or re-greened extremely quickly once the snow melted.
I love having some colour in my garden late winter/early spring.
vyskol, I have had the same experience. Sweet woodruff greens up very quickly, and doesn't seem to mind the spring sogginess in the least. You're so right--it's a sight for sore eyes this time of year.