When should I plant כרוב in Zone 4a?

Start כרוב seeds indoors around Mar 24. Transplant outdoors after Apr 14. Expect first harvest around Jun 18.

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 כרוב in Zone 4a?

Yes. כרוב needs 80 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

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🥬 Growing כרוב in Zone 4a

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

Planting Calendar

Indoor

Outdoor

Harvest

Mar 24Oct 1

Season: May 5 – Oct 1 (149 ימים)

אזור4a

כפור אחרוןMay 5

כפור ראשוןOct 1

עונה149 ימים

קטיף80 ימים

שמששמש מלאה

When to Plant כרוב in Zone 4a

Start Seeds Indoors: Mar 24

Start כרוב seeds indoors around Mar 24 (6 שבועות לפני הכפור האחרון). Optimal germination temperature: 70F. Germinates in 5-10 days.

Transplant Outdoors: Apr 14

Transplant כרוב seedlings outdoors after Apr 14. Wait until soil temperature reaches 45F. Space plants at 1/מ² (30cm מרווח). Harden off plants for a week before moving outside.

Harvest: Jun 18

First harvest approximately Jun 18 (~65 ימים from transplant). Continue harvesting until first frost (Oct 1).

Fall Planting: Jul 9

For a fall harvest, plant כרוב around Jul 9 (12 weeks before first frost).

שתילה מלווה

✅ תפוחי אדמה✅ נענע ✅ שמיר✅ בצלים✅ סלרי

❌ שעועיות❌ עגבניות❌ תותים

כרוב 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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