Good afternoon,
We have had a number of Sempervivum rot out due to high heat and humidity. (Guessing) We have had 95+ and high humidity. Most days for the past 2 months were above 85 and closer to 90+. Not Houston, lol, but not their usual mountain top home.
It reached a point where the only water they received was the rain. Stopped watering everything that wasn't a fern or a banana plant.
I never watered them heavily to begin with. Maybe once a week if it had been hot and dry all week at the beginning of summer. They are growing in clay 6 and 8 inch containers.
Mostly 60% sharp sand and 40% miracle gro without water polymers. (I know about pumice now. Ordered several bags but haven't had time to repot everything. Work out of town M-F most weeks.
As little as 5 hours Sun for a few of the containers, but that didn't seem to make a difference. Some in prime locations rotted. Some in lousy locations did fine.
Is rotting likely to be less of a problem in winter in zone 7B 8A?
Lol, most of the trees are deciduous. So they will get more sun in the winter than they do in the summer.
Thanks!
