As far as winter irrigation in the greenhouse goes, melting snow in big barrels is the next best thing to a really long hose, a well and an electric pump. Fill ’em up, cover with clear plastic, wait a day (even on a dull, cloudy day, it gets up to 60°F in the hoophouse). Repeat a couple of times, and you have 50 gallons of rainwater in a barrel! The alternative is dragging 200′ of hose through deep snow from the barn to the greenhouse, then reeling it in and draining it, every couple of days. The weather has put the kibosh on the early-March, barely heated greenhouse plan, the happy prospect until March actually came around. The nights have been regularly plunging to 10°F (-12°C), so it’s really not worthwhile to heat things up by 25°F. No worries. Adjusting expectations and schedules more or less by the day is all part of the fun… It’s never boring!