🥬 When to Plant Kale

🥬 Vegetable
Cool Season

Very cold-hardy; flavor improves after frost

📅 Planting Calendar by USDA Zone

Kale is a cool-season crop — plant it around your last spring frost, and you can often start it earlier indoors or sow again for a fall harvest. Find the exact start-indoors, transplant, and direct-sow dates for your USDA zone in the table below.

Select your zone to highlight your dates. All dates are calculated from each zone's average frost dates — see how we calculate them.

Find my zone
Zone Last Frost Start Indoors Transplant Direct Sow
Zone 2A May 30 Apr 18 May 2 May 2
Zone 3B May 15 Apr 3 Apr 17 Apr 17
Zone 4A May 8 Mar 27 Apr 10 Apr 10
Zone 4B May 1 Mar 20 Apr 3 Apr 3
Zone 5A Apr 25 Mar 14 Mar 28 Mar 28
Zone 5B Apr 18 Mar 7 Mar 21 Mar 21
Zone 6A Apr 21 Mar 10 Mar 24 Mar 24
Zone 6B Apr 10 Feb 27 Mar 13 Mar 13
Zone 7A Apr 5 Feb 22 Mar 8 Mar 8
Zone 7B Mar 28 Feb 14 Feb 28 Feb 28
Zone 8A Mar 20 Feb 6 Feb 20 Feb 20
Zone 8B Mar 12 Jan 29 Feb 12 Feb 12
Zone 9A Feb 28 Jan 17 Jan 31 Jan 31
Zone 9B Feb 15 Jan 4 Jan 18 Jan 18
Zone 10A Feb 1 Dec 21 Jan 4 Jan 4
Zone 10B Jan 15 Dec 4 Dec 18 Dec 18
Zone 11A Jan 1 Nov 20 Dec 4 Dec 4

Kale is an extremely cold-hardy green that actually tastes better after frost.

Top Growing Tips

  • One of the hardiest vegetables — survives into the 20s°F
  • Flavor sweetens after frost exposure
  • Harvest outer leaves first, leaving the center to keep growing
  • Can overwinter in zones 7+ with mulch protection
  • Lacinato (dinosaur) kale is the most cold-tolerant variety

Companion Planting

Good companions: beets, celery, herbs, onions, potatoes

Avoid planting near: strawberries, tomatoes

Harvest Timeline

50-65 days from seed (baby leaves at 25 days)

Growing kale in your region?

These dates come from your zone's frost windows. For the full month-by-month plan — succession sowing, variety picks, and timing tuned to your climate, not just your zone — our regional vegetable-gardening guides cover your area start to finish.

Find your regional growing guide