Back-up emergency heat

[Bradfo69]

As I sit and watch the news about ice, snow and massive outages in the midwest, my thoughts turn to the reality that although we rarely lose power and even then it's no more than a couple hours, since I now have a small greenhouse that I heat with electric, THIS will be the year that the east coast near Philadelphia will get it's disaster. (oh, the power I yield, right?)

That being said, a backup heat source is on the agenda. I'm curious, has anyone ever used a kerosene heater in an emergency? I also have read about parrafin heaters but rarely see one in catalogs or stores in the US. I've had my issues with propane but what about one of those reflective units that mounts on top of a 20 lb. propane cylender? In an emergency, bud blast and some yellowing is still far better than a room full of 400 dead orchids.

Thoughts?