[Wikipedia] Cultivation: This flowering shrub, Philadelphus microphyllus, is propagated and used as a drought-tolerant ornamental plant in its native range for: traditional gardens; natural landscape, native plant, drought tolerant water conserving, and habitat gardens; and various types of municipal, commercial, and agency sustainable landscape and restoration projects. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/31/2025).