When should I plant Rosmarin in Zone 9b?

Start Rosmarin seeds indoors around Dec 30. Transplant outdoors after Mar 17. Expect first harvest around Jun 15.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Rosmarin in Zone 9b?

Yes. Rosmarin needs 90 days to harvest. Zone 9b has a 250-day growing season, which is sufficient.

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🌿 Growing Rosmarin in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Rosmarin. Sista frost: Mar 10. Första frost: Nov 15.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 30Nov 15

Season: Mar 10 – Nov 15 (250 dagar)

Zon9b

Sista frostMar 10

Första frostNov 15

Säsong250 dagar

Skörd90 dagar

SolFull Sol

When to Plant Rosmarin in Zone 9b

Start Seeds Indoors: Dec 30

Start Rosmarin seeds indoors around Dec 30 (10 veckor före sista frosten). Optimal germination temperature: 70F. Germinates in 14-28 days.

Transplant Outdoors: Mar 17

Transplant Rosmarin seedlings outdoors after Mar 17. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm avstånd). Harden off plants for a week before moving outside.

Harvest: Jun 15

First harvest approximately Jun 15 (~90 dagar from transplant). Continue harvesting until first frost (Nov 15). 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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