First, I bring in all the nicest plants into the house. It's heavy work, but it must be done.
This one (White Bird of Paradise) stays outdoors and will need covering with blankets since it is growing in the ground.
Large plants are grouped together on the back porch and covered. Ugh! More heavy lifting.
I filled the small greenhouse back in early December, but tonight it needed an extra piece of plastic sheeting stapled to the ceiling. My son helped. Lights and a heat source are turned on for the night.
This is my heat source: a 200 watt shop light aimed at a metal tub. The tub captures the light and radiates the heat throughout the greenhouse. I've tried a 500 watt shop light, but it was too bright and it got very hot. On rare nights lower than 25 degrees, I use two 200 watt lights. It easily keeps the greenhouse above freezing.
Now for the chickens. They will especially enjoy the extra hay tonight.
I also covered many more plants with towels, blankets, and sheets. The front yard looks a bit crazy with everything covered, but people do this all over our area and no one thinks it strange.
That's what it takes to have a tropical garden in a frost zone.
Is it worth it? For most people it seems crazy. But not to gardeners. You probably do just as much work in your garden only in different ways.
Good night, and stay warm.