Hardiness of Teas in Zone 7 or Colder
I am wondering on the advisability of growing a tea rose in a container outdoors in zone 7. The rose in question is 'Arcadia Louisiana Tea'. I would be growing it in a half-whiskey-barrel in a sheltered location (south-east side of my house, at the edge of an asphalt driveway).
I've heard that container growing roses requires one to subtract an additional zone of hardiness, and since I understand most teas to only be hardy to zone 7 I think it might get too cold here for it. But, I wonder if it might be hardier than I think? Plus, I could always wheel it into the garage (which it would be right next to) if temps got really bitter (sub-freezing). I would greatly appreciate any comments--I love this rose, but I am rapidly running out of rose-friendly real estate in my yard, in-ground.