Wanting desperately to grow Mophead hydrangeas
I live in southwestern Idaho and reallllly want to grow Mophead style hydrangeas. I've been doing research and it seems like my winters could be a problem for these guys. I would like to grow them in a large oak barrel on a side of my house that gets morning sun and day/ afternoon shade. My question is would it be possible to keep the plant in flowering condition if I moved the plant to my greenhouse or garage during the winter? I've always wanted to grow them just never had the courage to finally try it. This is the year! Thank you!