Can You Grow Borage in Zone 1a?
Quick Answer:
⚠️ Maybe — Direct sow in spring and let it self-seed for next year.
⚠️ Maybe
Borage is marginal in Zone 1a — possible with effort
Direct sow in spring and let it self-seed for next year.
How to make it work
- Use a 3+ gallon container that can be moved indoors before frost
- Bring inside before mid-July
🌱 Growing Borage in Zone 1a
Direct sow after last frost — hates transplanting. Self-seeds so aggressively you plant it once and it returns every year. Great companion plant for tomatoes and strawberries. Harvest flowers daily to encourage more blooms.
🪴 Container: 3+ gal pot❄️ Frost Tolerant
🗺️ USDA Plant Hardiness Zones
Zone 1 is shown in
this colour
on the map below
2023 USDA Plant Hardiness Zone Map — public domain. USDA Agricultural Research Service
USDA zones run 1a–13b (26 half-zones). Each full zone above covers both the a and b half-zones. Browse all US zones →
Technical climate details for Zone 1a
- USDA Zone
- 1a
- Last Frost
- early July
- First Frost
- mid-July
- Frost-Free Days
- 14
- Borage Zone Range
- 2a – 11b
- Days to Harvest
- 50–60 days
Frequently Asked Questions
Direct sow in spring and let it self-seed for next year.
Zone 1a is in USDA Hardiness Zone 1a with approximately 14 frost-free days per year.
Borage grows in USDA Zones 2a–11b.
Borage is beginner-friendly and one of the easier crops to grow.