Most of the time salad doesn’t need a greenhouse in eastern NC. It can take cold, just not heat. Ours has about fizzled for the summer—plant more late Sept/Oct whenever it cools off enough. Slugs love lettuce—make sure you wash it well!
I hate bugs too, and I’m not much on chemicals but the bean beetles are eating my green beans up and they’re just starting to bloom. Have to sacrifice something, and the bugs are it!
I didn’t figure we needed a greenhouse for the heat, I just wanted to help keep the bugs off!