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Can You Grow Borage in Colorado?

US · USDA Zone 5b · zones 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b

Grows well here

Borage grows easily anywhere in your zone — direct sow and let it self-seed for years of free plants.

Plant zones

2a–11b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

50–60 days

When to plant Borages in Colorado

Direct sow

Apr 7

Harvest

May 27 – Jun 6

Dates are approximate, based on Colorado's average frost dates. Your exact yard may vary by microclimate.

About Borage

Borage is an effortless annual with striking blue star-shaped flowers. The cucumber-flavored leaves and flowers are edible, and it is a powerful pollinator magnet that self-seeds freely year after year.

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.

Full borage growing guide →

Gardening in Colorado

Colorado has a semi-arid mountain climate with intense sunshine and low humidity. Front Range cities like Denver are Zone 5-6; higher elevations are Zones 3-4.