Once it's started, I don't think temp will faze it unless it gets too cold or baking hot.
Be very, very careful if you stake it. Those stems are very easily snapped. Best to do it bit by it, pulling it over as far as you dare each time.
I have given up on staking. I made a special framework for mine to go on, so that the flowers can droop down naturally. I think it's nicer, and this year when the frame is full, it should look pretty good.
I can appreciate that not everyone has the space to do that.
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