another hare-brained soil heating question - OUTDOOR cables??
OK, this is just an idea that popped in my head. Has anyone tried this?
Take a long length of heating cables. Bury them a few inches deep OUTDOORS in your garden to get the soil nice and warm so you can plant things like corn early. By warming the soil to the 70s or so, we could get faster and earlier growth of corn. Then, if a frost threatens, throw a row cover over the plants - the heat radiating from the soil would probably be enough added with the row cover itself to protect from a decent freeze.
In my head I could see getting corn about 4-6 weeks early this way.
I realize it would get expensive to do this for that big of an area, but it might be worth it to get a small, early crop.
Could also work with other warm weather veggies, but corn comes to mind as it's normally a direct-seeded plant...and I've done well simply going with larger transplants for peppers and tomatoes to get earlier crops, even if I plant them in the ground around the usual time.