Growing Leek in Zone 6b
Zone 6b has mild winters and a long growing season — good conditions for Leek. Last frost: Apr 15. First frost: Oct 22.
Planting Calendar
Season: Apr 15 – Oct 22 (190 days)
When to Plant Leek in Zone 6b
Start Seeds Indoors: Feb 4
Start Leek seeds indoors around Feb 4 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 7–14 days.
Transplant Outdoors: Apr 1
Transplant Leek seedlings outdoors after Apr 1. Wait until soil temperature reaches 45°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.
Harvest: Jun 30
First harvest approximately Jun 30 (~90 days from transplant). Continue harvesting until first frost (Oct 22). Leek can overwinter in mild climates for continued harvest.
Companion Planting
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 13bFrequently Asked Questions
When should I plant Leek in Zone 6b?
Start Leek seeds indoors around Feb 4. Transplant outdoors after Apr 1. Expect first harvest around Jun 30.
What is the last frost date for Zone 6b?
The average last spring frost date for Zone 6b is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.
Can I grow Leek in Zone 6b?
Yes. Leek needs 120 days to harvest. Zone 6b has a 190-day growing season, which is sufficient.
What is the best month to plant Leek in Zone 6b?
The best time to start Leek in Zone 6b is Feb. Begin seeds indoors around Feb 4, then transplant outdoors after the last frost date of Apr 15.
What companion plants grow well with Leek?
Good companion plants for Leek include Carrots, Onions, Celery. Avoid planting Leek near Beans, Peas.
How long does Leek take to harvest?
Leek takes approximately 120 days from planting to harvest. In Zone 6b, expect your first harvest around Jun 30.
Plan Your Leek Garden
Track Leek from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Leek Growing Guide