Growing Borage in Zone 10a
Zone 10a has a year-round growing season. Borage can be planted almost any time with proper planning. Last frost: Feb 20. First frost: Dec 1.
Planting Calendar
Season: Feb 20 – Dec 1 (284 days)
When to Plant Borage in Zone 10a
Start Seeds Indoors: Jan 23
Start Borage seeds indoors around Jan 23 (4 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–14 days.
Transplant Outdoors: Feb 20
Transplant Borage seedlings outdoors after Feb 20. Wait until soil temperature reaches 50°F. Space plants at 18/sqft. Harden off plants for a week before moving outside.
Harvest: Apr 16
First harvest approximately Apr 16 (~55 days from planting). Continue harvesting until first frost (Dec 1).
Companion Planting
Borage in Other Zones
1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13bFrequently Asked Questions
When should I plant Borage in Zone 10a?
Start Borage seeds indoors around Jan 23. Transplant outdoors after Feb 20. Expect first harvest around Apr 16.
What is the last frost date for Zone 10a?
The average last spring frost date for Zone 10a is Feb 20. The first fall frost averages Dec 1, giving a 284-day growing season.
Can I grow Borage in Zone 10a?
Yes. Borage needs 55 days to harvest. Zone 10a has a 284-day growing season, which is sufficient.
What is the best month to plant Borage in Zone 10a?
The best time to start Borage in Zone 10a is Jan. Begin seeds indoors around Jan 23, then transplant outdoors after the last frost date of Feb 20.
What companion plants grow well with Borage?
Good companion plants for Borage include Strawberries, Tomatoes, Squash, Cucumbers.
How long does Borage take to harvest?
Borage takes approximately 55 days from planting to harvest. In Zone 10a, expect your first harvest around Apr 16.
Plan Your Borage Garden
Track Borage from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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