https://pfaf.org/user/Plant.aspx?LatinName=Platystemon+californicus
Platystemon californicus is a ANNUAL growing to 0.3 m (1ft) by 0.1 m (0ft 4in). See above for USDA hardiness. It is hardy to UK zone 8. It is in leaf from May...
platystemon californicusplant databasecreamcupspfaf