When should I plant Rosmarin in Zone 5a?

Start Rosmarin seeds indoors around Feb 17. Transplant outdoors after May 5. Expect first harvest around Aug 3.

What is the last frost date for Zone 5a?

The average last spring frost date for Zone 5a is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Rosmarin in Zone 5a?

Yes. Rosmarin needs 90 days to harvest. Zone 5a has a 163-day growing season, which is sufficient.

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🌿 Growing Rosmarin in Zone 5a

Zone 5a has cold winters and a moderate growing season. Timing is key for Rosmarin in this zone. Sista frost: Apr 28. Första frost: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Oct 8

Season: Apr 28 – Oct 8 (163 dagar)

Zon5a

Sista frostApr 28

Första frostOct 8

Säsong163 dagar

Skörd90 dagar

SolFull Sol

When to Plant Rosmarin in Zone 5a

Start Seeds Indoors: Feb 17

Start Rosmarin seeds indoors around Feb 17 (10 veckor före sista frosten). Optimal germination temperature: 70F. Germinates in 14-28 days.

Transplant Outdoors: May 5

Transplant Rosmarin seedlings outdoors after May 5. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm avstånd). Harden off plants for a week before moving outside.

Harvest: Aug 3

First harvest approximately Aug 3 (~90 dagar from transplant). Continue harvesting until first frost (Oct 8). Rosmarin can overwinter in mild climates for continued harvest.

Samplantering

✅ Bönor✅ Morötter✅ Kål

Rosmarin in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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