I recently bought 3 BB's from Lowes that were labeled Clemson 'red cluster' bottlebrush. The tag info lists cold hardiness as zone 7a. Any zone 8a gardeners having success with this cultivar? I'm also interested in other bottlebrush(callistemon) cutivars that are cold hardy in zone 8a. BTW, I already have woodlander's red, which is quite cold hardy, but it's flowers aren't very showy.

Thanks!