You take a few days off from the garden and all of a sudden it becomes a battle ground between you and the various insect pests that invade....I noted that there were numerous holes in my once perfect broccoli, cauliflower and cabbage plants.  I also saw a number of velvety green worms camouflaged within the foliage with the only telltale sign of them being there were the holes in the leaves and an abundance of frass (insect excrement) they leave behind.  These are relatively easy pests to control though.  Generally, in a normal size garden, they can be handpicked and crushed.  They most commonly feed along the mid-vein and then as they grow, they tend to feed further out and may even bore into a head of cabbage.  If hand picking isn’t...