Grew 2 of the Black King Eggplants inside a greenhouse in northwest Iowa. It gets very hot here in the summer and inside the greenhouse would easily reach over 110 degrees. I grew them in grow bags with miracle grow raised bed soil and they produced very well. The plants grew like crazy, handled the heat and produced a lot of really nice fruit from early in the season till October when I cleaned out the greenhouse for the winter. I've never had luck growing eggplant in the garden and was amazed how well these did a a greenhouse. Can't say enough good things about this variety of eggplant!