How-to Guide
How to Grow Borage
The short answer
Borage is a fast-growing annual, about 2 to 3 feet tall, valued as both an ornamental and an edible herb, with young leaves and flowers that taste of cucumber. Its starry blue flowers are magnets for bees, and it works well as a companion plant near tomatoes, squash, and strawberries.
Sow seed directly in full sun after frost danger passes, planting about 1/4 to 1/2 inch deep, then thin seedlings to about 12 inches apart once they reach a few inches tall. For a head start, sow indoors around four weeks before the last frost. Harvest young leaves and open flowers for the best flavor.
Planting and care
Give borage full sun and average soil. It is easy from seed and reseeds itself, so expect volunteers in following years.
- 1Direct-sow — Sow seed 1/4 to 1/2 inch deep in full sun after frost, in rows about 12 inches apart.
- 2Thin seedlings — Once plants reach 4 to 6 inches, thin to about 12 inches apart.
- 3Harvest young — Pick young leaves and freshly opened flowers, which have the best cucumber-like flavor.
→ For any culinary or medicinal use, consult authoritative sources; this guide covers growing only.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Illinois Extension — Edible Ornamental, Uncommon Herb: Borage — Borage is a fast-growing annual for full sun, direct-sown after frost, with edible cucumber-flavored leaves and bee-attracting blue flowers.
Keep going
How to Grow French Tarragon
How-to Guide
How to Grow Lemon Balm
How-to Guide
How to Grow Bay Laurel
How-to Guide
How to Grow Stevia
How-to Guide
How to Grow Chives: The Perennial That Comes Back Forever
How-to Guide
How to Grow Summer Savory
How-to Guide
How to Grow Oregano: Greek vs Common, and Why Drainage Decides
How-to Guide
Crabgrass: Identification and Cultural Control
Plant Problem Diagnostic