I'm doing a few things to get ready for spring. Progress on my little plant house. My husband asked what it's for and when I described the function- growing seedlings and hardening off plants that will move outside in summer he said "Oh, so it's like a halfway house for plants!" Ha. I was looking at definitions and realize this doesn't qualify as a greenhouse at all. Greenhouse is a structure where the temperature can be regulated via vents, fans and/or heating. All the clear-sided things I've built for plants to get max daylight in early spring technically should be called coldframes. But this one has a peaked roof so I think of it as my coldhouse. I painted it white.