My hydrangea is new and was looking great until we had a heavy rain -- once it started recovering from the rain, it started drooping again because of the heat -- i can't remember the name of mine so I don't know if it is hardy for heat -- I've started placing ice cubes on the top of the mulch to help cool its roots and I have a small fan hid beside the porch to low on it to lower the overall temperature -- we are in the high 90's this week so it will be difficult for the poor thing -- It is in the filtered sun with shade provided for most of the day from a large tree nearby.