 With cabbage, I know you can re-harvest. If you get a head of cabbage early in the season, you can get another one potentially off the same plant. Are the worms or the pests any worse later in the season with that second, maybe smaller head of cabbage? Probably a little bit less. Maybe you've staggered your growing, so you've started them a week apart, your cabbages, to get more of the run.