Lettuce isn't quite hardy enough to survive even a mild zone-6 winter despite quick-hoop protection. But the row-cover fabric produces a protected microclimate that pre-heats the soil for spring...while also growing quite a sturdy crop of dead nettle, chickweed, and speedwell.

I've hand-weeded beds like this in the past...and it's a bad idea. One of my goals for this year is to think of smarter ways to handle body-breaking tasks, so I'm experimenting with two early spring weed killers.

Option A: (in the foreground) solarization, which I really don't expect to work at such a cold time of year. Option B: a short-term cardboard kill mulch, which I expect to weaken the plants within a couple of weeks and make them easy to handweed.

Perhaps Mark should pull out the flame weeder and see if we can come up with an experimental option C?