Thanks, yes, you are right, the wood is a temporarly labeling system only! I intend to get some of those nice metal labels but for teeny things like these dl seedlings I need something smaller. I already have a paint pen -- several -- that I use on winter sowing jugs and which does NOT fade at all, that I bet will work on those plastic knives just fine.
Shoot, I might just cut up some of the used WS jugs and use those.... they won't look very tidy though.
