DibbleWhen to plant borage in Zone 10
In Zone 10, the last spring frost usually passes around January 31 and the first fall frost arrives around December 15, leaving about 318 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Nearly frost-free. Grow cool crops in winter; summers are too hot for many vegetables.
Planting windows for borage in Zone 10
| Task | Window |
|---|---|
| Direct sow | Jan 31 to Feb 14 |
| Estimated harvest | Mar 27 to Jun 25 |
The harvest estimate counts 55 days to maturity, then a picking window of about 90 days. These windows use typical frost dates for Zone 10; Dibble pins them to your exact ZIP code.
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How to grow borage
Direct sow around last frost, borage resents transplanting and self-sows freely. A pollinator magnet with edible blue flowers.
Companion plants
Good neighbors for Borage:
Borage in nearby zones
Keep exploring
Borage: the full growing guide · The Zone 10 planting calendar · Every crop and zone
Plant at the right time this season
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.