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Posted: Thu Mar 29, 2012 5:23 pm
by smredleg
Back in the dark ages (1978) Ortho published a lot of books, including, "How to Build & Use Greenhouses." CP 75 on coldframes, both in and above ground. PM me, and I'd gladly copy and send you some of their plans.
Posted: Thu Mar 29, 2012 7:44 pm
by jimthej
I like your idea for the moveable planter. Treated wood in contact with ground, not plants. Maybe redwood slats in the bottom with spaces for drainage. If needed maybe 1/2 inch mesh gavanized hardware cloth over the slats.
The auto temp control sounds real good, otherwise you'll spend so much time babysitting, you'll think $34.90 per plant was cheap.
Posted: Fri Mar 30, 2012 10:38 am
by oddie
Another wood to consider is cypress. Somewhere in my past I built above ground planting beds with it based upon common use at the time. But I got transferred after a couple of years so I don't know how long it lasted in contact with the ground and in the weather.