When should I plant Rosmarin in Zone 5b?

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 5b?

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

Can I grow Rosmarin in Zone 5b?

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

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🌿 Growing Rosmarin in Zone 5b

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

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Oct 8

Season: Apr 28 – Oct 8 (163 dager)

Sone5b

Siste frostApr 28

Første frostOct 8

Sesong163 dager

Høst90 dager

SolFull Sol

When to Plant Rosmarin in Zone 5b

Start Seeds Indoors: Feb 17

Start Rosmarin seeds indoors around Feb 17 (10 uker før siste frost). 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 avstand). Harden off plants for a week before moving outside.

Harvest: Aug 3

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

Samdyrking

✅ Bønner✅ Gulrøtter✅ 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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