Viewing post #333264 by tarev

KAMasud said:
The above Euphorbia is growing wild in zone 7b and according to theory it should not be alive. Look at the rock face it is growing upon, this rock faces South. In winter the rock formation heats up due to sun which does modify the environment from zone 7b to 9b. At night the heat being radiated by the rock face protects the plant from frost. I was quite surprised when I saw it, it grows in zone 10/11 not zone 7b so I spent some time to find out its secret and the secret was in the South facing rock wall and what ever heat it accumulates during the day.
Any way the point is, find a South facing wall and even a lean to plastic tent like structure can keep your Epi's happy enough to survive and if its a balcony outside a window which faces South, it would be better. You can keep the window cracked open to heat up the plastic tent further.
Let your imaginations work with above in mind, who knows you may come up with a better option.
Regards,
Masud.

That's a very good observation Masud! Thanks! So that means my epi will hopefully have a fighting chance this winter! Its pot sitted on rocks and cement block against it! Keeping my fingers crossed!