Blossoming Questions

Thinking of putting some beautiful hydrangeas in my home in Zone 7a. Do they need full sun or part?
Where should I plant my Vanilla Strawberry™ Panicle Hydrangeas? I’m in Zone 8a.
Do you have tips on how to help my Strawberry Sundae® Panicle Hydrangeas to stand up straight? I’ve read that I should prune them back about 1/3 and I’ve also heard to prune the thinner branches that cross over one another. How about fertilizing?
I am in Missoula, Montana Zone 4-6. What variety of hydrangea would be best for me to purchase for a pot on my patio that gets plenty of sun?
I want to plant hydrangeas in my front garden bed. It gets no morning sun but will get sun from noon onward. I’m in the Nashville area, so the afternoon sun is quite hot. Is there a variety that can take the heat?
Why doesn’t my hydrangea bush get any flowers?
Do next years blossoms come on new or old growth?
Will my hydrangea bloom with a couple hours of afternoon filtered sun? I am in zone 6.
Q
WHEN DO I CUT BACK MY HYDRANGEAS? SOME OF THE OLD WOOD STEMS HAVE BUDS AND OTHERS DO NOT.