Can You Grow Borage in Zone 5b?
Borage grows well in Zone 5b
Borage grows easily anywhere in your zone — direct sow and let it self-seed for years of free plants.
📅 When to Plant in Zone 5b
Based on Zone 5b's average last frost of early April and first frost of late October — frost can arrive earlier or later in any given year, so check your local forecast before you transplant.
🌱 Growing Borage in Zone 5b
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.
🗺️ USDA Plant Hardiness Zones
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 5b
- USDA Zone
- 5b
- Last Frost
- early April
- First Frost
- late October
- Frost-Free Days
- 197
- Borage Zone Range
- 2a – 11b
- Days to Harvest
- 50–60 days