This is the first year that I’ve successfully had lettuce all winter.
Actually, lettuce does fine here in temperatures down to zero and even in snow (though I cover it with a light row cover). It doesn’t grow a lot once it gets cold though, so the challenge is to plant it when it can germinate and grow, but not so early that it bolts. It’s also necessary to do this in an amount that gives you lettuce all winter. Until this year, I never quite got it right, but this morning, I harvested all this lettuce. There’s still more that’s harvest-ready and now another younger batch that should be ready in a few weeks. Now I just need to keep the new successions coming.