Common/French and Hyacinthiflora lilacs require substantial winter dormancy and do not bloom reliably south of Z6.
'Dark K...Read Morenight' came out of the breeding program of Water Lammerts and staff at Descanso Gardens in La Canada Flintridge, CA, Z10a, and is recommended for planting in southern CA. It would also be worth testing in Z8 and Z9 in the southeastern US. However, I suspect that it has a different ancestry than indicated above.
Common/French and Hyacinthiflora lilacs require substantial winter dormancy and do not bloom reliably south of Z6.
'Dark K...Read More