hothouse

This had given him the strength to leave cadet school at seventeen and volunteer for active service, reach the rank of second lieutenant no later than his hothouse-bred contemporaries, begin his military studies in the General Staff Academy itself, and, still only twenty-five, graduate not only with top marks but with promotion out of turn for special excellence in military science.

and now she professes a / hot-house, which I think is a very ill house too.

Kruban is a tidally-locked Venusian hothouse, its surface perpetually obscured by clouds of sulfur and carbon dioxides.