My Cole crops have been decimated. They had been looking SO good, flourishing. Just before I was due to leave town for 4 days I noticed some caterpillars on them. I killed all I could find, then put a row cover on them. Upon returning I discovered all I had done was seal the burgers in, protecting them from predators! I have researched the culprit; it is the cross-striped cabbageworm larvae. My plants literally are skeletonized, especially the brussels sprouts. I am smoshing all caterpillars I can find, I am watering regularly (drought conditions in the NE). Should I give them a weak dose of liquid fertilizer? Or should I call it a loss & pull the plants? Can plants live without leaves? Can they grow new ones at this late date? Thanks for any suggestions.