05/29/2026
Hibiscus syriacus “Rose of Sharon/ Althea” 🌺
A hardy deciduous member of the tropical hibiscus family. Its late bloom, striking flower-shape, ease of maintenance, and good drought tolerance (once established) makes this perfect for the valley.
Flowers appear early summer and bloom until early fall. Individual blossoms open in early morning and close at night, lasting about three days each. Flowers have nectar pools, attracting hummingbirds and bees.
Flowers are produced on new wood, so prune in early spring to shape and reduce size. Pruning the shrub back in spring encourages larger flowers.