Carolina Gardening: Senna alata blooming, 1 by Xeramtheum

Xeramtheum wrote:
I just did some checking and there are small kerosene heaters available but I can't find any with thermostats and you might even consider propane as well - they might have thermostats. I don't know.

I've found that passive solar heating helps a bit .. merely take some 2 ltr soda bottles, paint them matte black, fill with water and lay on side .. collects heat in the daytime and releases it at night. I put all my extra tropical hibiscus on top of the bottles .. I've found that pretty much all plants will tolerate temps in the upper 30's with no lasting damage.