Most of zone 10 sees little or no frost, so the calendar turns around: warm-season flowers and crops go in from late winter to spring, and cool-season ones such as pansies, snapdragons, lettuce and broccoli are planted in fall for winter and spring.
| Plant | Zone 10a |
|---|---|
| Basil | Fall to winter for cool-season, late winter to spring for warm-season |
| Parsley Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Cilantro | Fall to winter for cool-season, late winter to spring for warm-season |
| Dill | Fall to winter for cool-season, late winter to spring for warm-season |
| Chives Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Spearmint Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Rosemary Comes back in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Common thyme Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Greek oregano Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Garden sage Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Lemon balm Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| French tarragon Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Lemongrass Comes back in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Bronze fennel Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| German chamomile | Fall to winter for cool-season, late winter to spring for warm-season |
| Stevia Comes back in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Lovage Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
| Garden sorrel Annual in zone 10 | Fall to winter for cool-season, late winter to spring for warm-season |
Zones measure winter cold, not season length, so your own frost dates can be a week or two off the zone median. Look up your frost dates by ZIP code, or read all about zone 10a.
Hardiness ranges, light and size are typical figures from university extension services and botanic garden plant records; a named variety can differ, so check its tag. Planting dates come from each zone's median frost dates (NOAA 1991 to 2020 climate normals) and the timing rules in how we check.