You know to be honest,
I am not sure of any one particular temp..
And I have seen some in cemeteries', just litely
touched by frost, but doesn't kill the whole plant
But that is when the plant
is left out, over
the whole summer, and is gradually introduced to cooling temps over night as the season wains..
So, it does indure the cooler temps..
But if you've had them inside, they're used to say 70*'s in your house, and then when you put them out they're like, whoaaaaaaaa, what happened to the vacation area I was just in..
So, they need to get acclimated first before they can just be left out...
~~~>Headin' over to the new Forum????