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. Sista frost: May 15. Första frost: Sep 22.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 6Sep 22

Season: May 15 – Sep 22 (130 dagar)

Zon3b

Sista frostMay 15

Första frostSep 22

Säsong130 dagar

Skörd120 dagar

SolFull Sol

When to Plant Leek in Zone 3b

Start Seeds Indoors: Mar 6

Start Leek seeds indoors around Mar 6 (10 veckor före sista frosten). 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 avstånd). Harden off plants for a week before moving outside.

Harvest: Jul 30

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

Samplantering

✅ Morötter✅ Lökar✅ Selleri

❌ Bönor❌ Ärtor

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

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

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