I've grown the related C procera. It likes lots of light and heat, but that's all relative here in Portland compared to Florida. It's used to North Africa so heat is ok, even long term. Moisture may be more of an issue but mine does ok overwatered in a pot here in a cold moist greenhouse during the winter.

I just now noticed my error. I should have asked about C procera as that is the plant I had in mind. I have since discovered Calotropis Gigantea and Calotropis procera are two different plants.

Thank you for this helpful information. I think my area gets more cold so I'm not certain I could over winter one here in my greenhouse as I only keep night temps at about 40 degrees through the coldest months. Although if I ever get hold of one of these plants, I'd really like to give it a try. Like Common Milkweed, the size of the leaves are so inviting where garden space is so limited. Common Milkweed usually becomes too ragged here in my garden by late summer to feed the fall migration, as do most of the native milkweeds I grow.

May I ask, did you start your plant by seed?

My thanks again for taking the time to comment.

Mary

A friend grew several from seed and gave me one. i think he just gave it to me this spring so we'll see how it does in reality this winter...