Pinky Pollen Ring is new to me, planted last fall. Tractor Supply added nursery plants to their menu last year. They had several plants on clearance late last year and I picked up this hydrangea in a 3 gallon pot for $5. Does not look like it will have any blooms this year.
Not familiar with winter dome. I have Radiata. Planted in 2020 and no blooms yet. Maybe this year. It does have nice foliage.
I am not aware of any issues with summer heat with any of my hydrangeas. I hardly ever worry about heat. Much more concerned with cold.
My Annabelle looks bad (Maybe dead) this year. If it makes it to fall I will move it.