When should I plant Rosmarin in Zone 9a?

Start Rosmarin seeds indoors around Jan 9. Transplant outdoors after Mar 27. Expect first harvest around Jun 25.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Rosmarin in Zone 9a?

Yes. Rosmarin needs 90 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.

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🌿 Growing Rosmarin in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Rosmarin. Sidste frost: Mar 20. Første frost: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 9Nov 12

Season: Mar 20 – Nov 12 (237 dage)

Zone9a

Sidste frostMar 20

Første frostNov 12

Sæson237 dage

Høst90 dage

SolFuld Sol

When to Plant Rosmarin in Zone 9a

Start Seeds Indoors: Jan 9

Start Rosmarin seeds indoors around Jan 9 (10 uger før sidste frost). Optimal germination temperature: 70F. Germinates in 14-28 days.

Transplant Outdoors: Mar 27

Transplant Rosmarin seedlings outdoors after Mar 27. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm afstand). Harden off plants for a week before moving outside.

Harvest: Jun 25

First harvest approximately Jun 25 (~90 dage from transplant). Continue harvesting until first frost (Nov 12). Rosmarin can overwinter in mild climates for continued harvest.

Samdyrkning

✅ Bønner✅ Gulerødder✅ 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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