When should I plant Leek in Zone 3b?

Start Leek seeds indoors around Mar 6. Transplant outdoors after May 1. Expect first harvest around Jul 30.

What is the last frost date for Zone 3b?

The average last spring frost date for Zone 3b is May 15. The first fall frost averages Sep 22, giving a 130-day growing season.

Can I grow Leek in Zone 3b?

Yes. Leek needs 120 days to harvest. Zone 3b has a 130-day growing season, which is sufficient.

Growing Leek in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Leek early indoors to maximize your harvest window. Poslední mráz: May 15. První mráz: Sep 22.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 6Sep 22

Season: May 15 – Sep 22 (130 dní)

Zóna3b

Poslední mrázMay 15

První mrázSep 22

Sezóna130 dní

Sklizeň120 dní

SluncePlné Slunce

When to Plant Leek in Zone 3b

Start Seeds Indoors: Mar 6

Start Leek seeds indoors around Mar 6 (10 týdnů před posledním mrazem). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: May 1

Transplant Leek seedlings outdoors after May 1. Wait until soil temperature reaches 45F. Space plants at 4/m² (15cm od sebe). Harden off plants for a week before moving outside.

Harvest: Jul 30

First harvest approximately Jul 30 (~90 dní from transplant). Continue harvesting until first frost (Sep 22). Leek can overwinter in mild climates for continued harvest.

Smíšená Výsadba

✅ Mrkve✅ Cibule✅ Celer

❌ Fazole❌ Hrášky

Leek 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

Plan Your Garden Leek

Track Leek from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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