Bob the Horticulturalist recons all chillies are perrenial. I recon some are more cold tolerant than others depends on 1 Where you are and 2. what varieties you are growing See our list of 200 varieties on web site for most cold tolerant varieties. Rococo is especially good. Michael Bailes. The Fragrant Garden, Portsmouth Road, Erina. N.S.W. 2250 Australia. (OZ) Int fax 61 243 651979 Phone 61 243 677322 EMAIL: frgntgar@ozemail.com.au Web page at: http://www.ozemail.com.au/~frgntgar/