Ok, I give up..squash vine borers
Second year running we cannot keep squash or zuk squash. We get about month's worth of growth then gone. Second year 100% organic.
Soap, no luck. Cleaning the stem once a week no help, running a needle into the stem after infection is no help. Slitting the stem is worthless vine stays stunted. Companion planting is ineffective. Infection is 100% both years. Compost tea is great for the plant but no help.
BT doesn't sound like it will work against them.
Which poison has the least side effects that will work. 5% sevin? Thought about wetting up a small batch and painting it along the bottom of stem.
But if we want squash(which we do) we going to have to do something.