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Can You Grow Marjoram in Illinois?

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

Grows well here

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

Plant zones

4a–9b

Illinois last frost

early April

Illinois first frost

late October

Days to harvest

70–100 days

When to plant Marjorams in Illinois

Start indoors

Feb 9

Transplant

Apr 7

Harvest

Jun 16 – Jul 16

Dates are approximate, based on Illinois'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 Illinois

Illinois has a humid continental climate with hot summers and cold winters. Chicago is Zone 5b-6a; southern Illinois is warmer at Zone 6-7. Classic Midwest growing region.