Growing Borage in Zone 10B

Borage is a cheerful, easy annual with brilliant blue star-shaped flowers that are edible, beautiful, and irresistible to bees.

Zone 10B has a very long growing season with mild winters. Many crops can be grown nearly year-round with successive plantings.

Top Growing Tips

• Direct sow after last frost — doesn’t transplant well due to taproot
• Self-seeds aggressively; weed seedlings to control spread
• Freeze flowers in ice cubes for elegant cocktail garnishes
• Wilts in heat but recovers overnight — don’t overwater
• Plant near strawberries and tomatoes as a companion and bee attractor

Companion Planting

Good companions: tomatoes, strawberries, squash

Avoid planting near: No significant conflicts

Harvest Timeline

Harvest flowers anytime; pick regularly to extend bloom period

About Zone 10B

USDA Hardiness Zone 10B has an average last spring frost around Jan 15 and first fall frost around Dec 31. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.