When should I plant רוזמרין in Zone 4a?

Start רוזמרין seeds indoors around Feb 24. Transplant outdoors after May 12. Expect first harvest around Aug 10.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Can I grow רוזמרין in Zone 4a?

Yes. רוזמרין needs 90 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

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🌿 Growing רוזמרין in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for רוזמרין in this zone. כפור אחרון: May 5. כפור ראשון: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 24Oct 1

Season: May 5 – Oct 1 (149 ימים)

אזור4a

כפור אחרוןMay 5

כפור ראשוןOct 1

עונה149 ימים

קטיף90 ימים

שמששמש מלאה

When to Plant רוזמרין in Zone 4a

Start Seeds Indoors: Feb 24

Start רוזמרין seeds indoors around Feb 24 (10 שבועות לפני הכפור האחרון). Optimal germination temperature: 70F. Germinates in 14-28 days.

Transplant Outdoors: May 12

Transplant רוזמרין seedlings outdoors after May 12. Wait until soil temperature reaches 55F. Space plants at 1/מ² (30cm מרווח). Harden off plants for a week before moving outside.

Harvest: Aug 10

First harvest approximately Aug 10 (~90 ימים from transplant). Continue harvesting until first frost (Oct 1). רוזמרין can overwinter in mild climates for continued harvest.

שתילה מלווה

✅ שעועיות✅ גזרים✅ כרוב

רוזמרין in Other Zones

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