When should I plant Kale in Zone 6b?

Start Kale seeds indoors around Mar 4. Transplant outdoors after Mar 18. Expect first harvest around May 2.

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 Kale in Zone 6b?

Yes. Kale needs 60 days to harvest. Zone 6b has a 190-day growing season, which is sufficient.

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🥬 Growing Kale in Zone 6b

Zone 6b has mild winters and a long growing season — good conditions for Kale. Last frost: Apr 15. First frost: Oct 22.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 4Oct 22

Season: Apr 15 – Oct 22 (190 days)

Zone6b

Last FrostApr 15

First FrostOct 22

Season Length190 days

Days to Harvest60

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing1/sqft (12" apart)

When to Plant Kale in Zone 6b

Start Seeds Indoors: Mar 4

Start Kale seeds indoors around Mar 4 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 5–10 days.

Transplant Outdoors: Mar 18

Transplant Kale seedlings outdoors after Mar 18. Wait until soil temperature reaches 40°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: May 2

First harvest approximately May 2 (~45 days from transplant). Continue harvesting until first frost (Oct 22). Kale can overwinter in mild climates for continued harvest.

Fall Planting: Aug 27

For a fall harvest, plant Kale around Aug 27 (8 weeks before first frost).

Companion Planting

✅ Sage ✅ Dill✅ Onions✅ Beets✅ Potatoes

❌ Strawberries

Kale 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 Kale Garden

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

Start Free Kale Growing Guide