The previous year I found this Green-veined White caterpillar, again on a garlic mustard plant.
Earlier this year I was amazed to see this Green-veined White chrysalis on the corner of our garage wall. It surprised me as it must have been there from around September the previous year, but I hadn't noticed it, even though I walk past that corner of the garage every day. I hadn't noticed any caterpillars in the garden either, but presumably it had been feeding on a nasturtium plant. It is a fantastic colour, although it isn't very well camouflaged against the wood.