bird netting, of course, will not work. You need a floating row cover,
weighed down well. What I do is use the row cover through june, and I
put a peony ring around the plant so as to support the row cover and
let the plant develop vertically. The borers still get the plant, but
by then it is usually late august and the garden is full of other
vegetables. I guess I protect them against the first generation but not
the second.