hello, Can some one tell me which species of following genus can be grown as perennial in zone 10b. 1- Gaillardia aristata pulchella grandiflora 2- Scabiosa atropurpurea caucasica columbaria lachnophylla ochroleuca succisa 3- Heliotropium arborescens 4-Echinacea purpurea pallida grandiflora 5- Catananche caerulea 6- Berkheya purpurea 7- Brachycome iberidifolia Thanks, Muhammad Khabbab Lahore, Pakistan
