I don't know what happened to it. It was my biggest and most beautiful cabbage plant. It had the same amount of water as the other cabbage plants. It doesn't appear that the slugs ate it. It just drooped and died within a few days. Things like this has taught me the importance of planting many different varieties of vegetables. Some days, for no apparent reason, seeds don't sprout or plants just die. It's just how life in a garden goes.