I have a Darlow's Enigma in mostly shade under various neighbors' trees and it thrives there. It has been a regular bloomer under those conditions and needs absolutely no care beyond carefully reaching in to prune out the small canes it sheds from time to time. If Compassion is happy, Darlow's Enigma should have no trouble. It is happy to grow toward the light and can be either a massive standalone bush or a large bush that sends some canes along a climbing structure. It's not really a climber in the sense of Compassion so don't expect it to climb an arch or something like that. Just don't plant it somewhere that you're going to be walking a lot. Its thorns are legendary and vicious with barbs on every conceivable part of the plant. It's rock solid hardy and disease free as far as I can tell from a safe distance :)

The only issue about planting this time of year is getting it enough water to establish well, particularly given root competition from the maple tree. If you can get it regular water it may be fine to plant. Potting it up for a few weeks to acclimate to your climate is always a good thing and by the end of August hopefully the heat will decrease and water be more regular in rain.

Cynthia

Thank you so much for the detailed answer! Lots of good information and just what I needed!

I always pot up first for a while. We get plentiful rsRainin, so no need to worry. Just supplement until established.You could shade it for a bit if you plant it now.