Gardeners' World Web User
04/07/2009 at 14:45
Gill, victorian greenhouses had watering tanks in the greenhouse full of water all the time (and staff to do the watering of course!). I think a large bowl would be good, but the water needs changing regularly so as not to go stagnant and bring other pests/diseases in. I stand my tomatoes in pots on large trays which I fill with water, this gives some moisture to the greenhouse atmosphere, and keeps the tomatoes watered for a couple of days.