Growing forget-me-not in zone 10b
(Zone 10b = an average winter low of 35°F to 40°F.)
In USDA zone 10b, the typical last spring frost is frost-free and the first fall frost is frost-free. Here is when to plant forget-me-not against those dates.
Plant (by season)April to MayApproximate planting season; see the guide for your area.
These are zone 10b averages
Computed from 262 ZIP codes in zone 10b. Your town's frost dates vary; enter your ZIP for dates built on your nearest weather station.
Get my exact datesUSDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service / Oregon State University PRISM Group. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020. Planting windows for forget-me-not from North Carolina Extension Gardener Plant Toolbox (NC State Extension). Zone dates are medians; local conditions vary.