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Can You Grow Rosemary in Idaho?

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

Grows well here

Rosemary grows as a perennial here — establish it once and it will thrive for years.

Plant zones

6a–11b

Idaho last frost

mid-March

Idaho first frost

mid-November

Days to harvest

Perennial

About Rosemary

Rosemary is a Mediterranean herb that thrives in poor well-drained soil and full sun once established.

Plant in the sunniest most well-drained spot. Excellent in containers — bring indoors in winter in cold zones. Drought-tolerant once established. Avoid overwatering.

Full rosemary growing guide →

Gardening in Idaho

Idaho has a semi-arid continental climate. Southern valleys are Zone 6-7 with hot dry summers; northern regions and mountains are colder. Excellent for root vegetables and cool crops.

See what grows well in Idaho →

Frequently asked questions

Can you grow Rosemary in Idaho?

Rosemary grows as a perennial here — establish it once and it will thrive for years.

What zone is Idaho?

Idaho spans USDA Zone 6b (3b, 4a, 4b, 5a, 5b, 6a, 6b).

When do you plant Rosemaries in Idaho?

See the planting guide for Rosemary — timing depends on your exact frost date.