Quote:
Originally Posted by VoodooChile
A concrete slab might actually retain cold longer than regular ground, and slow the emergence of your plants.
Good Luck!
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not if you cover it in with a plastic or glass structure, it will do the opposite.........
we utilize coldframes to overwinter plants(30'x50' and 18'x100' structures) and even on the coldest nights, its still comfortable inside of them and we use no heat..........we have 12" of stone underneath our groundcover fabrics that absorbs our sunlight in the day and keeps the plant containers warm at night.......it keeps it so warm, that yes we are even growing new material in there right now and have been since late november
anything tha tyou buiild make sure its has ample ventilation, i have to run exaust fans in mine simply because it would be well over 100 degrees even on a sunny day that stays in the low 30s and have made everything automated, which makes it even nicer.
check out atlas greenhouses, jaderloon, and grower solution..........you can get anything you would possibly need from these suppliers plus some.......these are the only ones i deal with