The fennel is definitely overgrazed. I have to get into town and see if they still have some fennel, but it's certain they won't have enough foliage to get the current crop of caterpillars to maturity. I don't know if they have a predator around here or not, but they are fully exposed on bare stalks today and only a few look large enough to make a chrysalis. Not a promising scenario. Bummer.