I have had moderate corn earworm issues since I’ve been growing sweet corn. I plant in succession most of the summer. The earlier crops are usually not bad, later harvests seem to almost all have damage, even if I use carbaryl, Bt, and/or permethrin…
I have read about using mineral oil, or mineral oil with Bt in it…does that work? Any tips or other suggestions?
Some varieties fare better due to tighter husks, as well.