This is my Annabelle Hydrangea. I'm new to gardening, what could be the issue? I can't tell if I'm over or under watering. When I water, I make sure the soil needs it with the second knuckle depth test. Usually once per day. It gets about 8hr full sun. When I transplanted it from the plastic pot on June 9th, it was a very hot 30c day, could it still be recovering? Many of the other plants I planted on the same day died back a bit as well, but are slowly recovering. Zone 4b. Thanks!