When should I plant Leek in Zone 9a?

Start Leek seeds indoors around Jan 9. Transplant outdoors after Mar 6. Expect first harvest around Jun 4.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Leek in Zone 9a?

Yes. Leek needs 120 days to harvest. Zone 9a has a 237-day growing season, which is sufficient.

Growing Leek in Zone 9a

Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like Leek. Last frost: Mar 20. First frost: Nov 12.

Planting Calendar

Indoor

Outdoor

Harvest

Jan 9Nov 12

Season: Mar 20 – Nov 12 (237 days)

Zone9a

Last FrostMar 20

First FrostNov 12

Season Length237 days

Days to Harvest120

SunFull Sun

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Leek in Zone 9a

Start Seeds Indoors: Jan 9

Start Leek seeds indoors around Jan 9 (10 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 7–14 days.

Transplant Outdoors: Mar 6

Transplant Leek seedlings outdoors after Mar 6. 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 4

First harvest approximately Jun 4 (~90 days from transplant). Continue harvesting until first frost (Nov 12). Leek can overwinter in mild climates for continued harvest.

Companion Planting

✅ Carrots✅ Onions✅ Celery

❌ Beans❌ Peas

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 Leek Garden

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

Start Free Leek Growing Guide