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Can You Grow Marjoram in Colorado?

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

Grows well here

Marjoram grows well here in full sun with well-drained soil — a fragrant, low-maintenance herb.

Plant zones

4a–9b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

70–100 days

When to plant Marjorams in Colorado

Start indoors

Feb 9

Transplant

Apr 7

Harvest

Jun 16 – Jul 16

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

About Marjoram

Marjoram is oregano's sweeter, milder cousin — a tender perennial herb (grown as an annual in cold zones) with a warm, aromatic flavor perfect for Mediterranean cooking.

Start indoors 6-8 weeks before last frost. Pinch regularly to keep bushy. Harvest before it flowers for best flavor. Bring pots indoors in cold zones.

Full marjoram 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.