š„¬When to Plant Kale in USDA Zone 7a (2026 Guide)
Frost actually sweetens it. Plant early spring and again for fall. Here is the cool-season planting schedule for kale in zone 7a (covering areas like Nashville TN, Oklahoma City OK). All dates are based on 2026 frost data for your zone.
Start Seeds Indoors
Mar 6
Direct sow or transplant
Mar 20
Harvest From
May 14
Because kale is a cool-season crop, it tolerates light frost and can go out around Mar 20, before zone 7a's average last frost on Apr 10.
- Type: Cool-season
- Method: Direct sow or transplant
- Days to harvest: 55
- Spacing: 12" apart
- Sun: Full sun to part shade
- Zone 7a frost: Apr 10 ā Oct 25
- Season length: ~198 days
- Companions: beets, onion, herbs
Growing kale in zone 7a
Zone 7a has an average last spring frost around Apr 10 and a first fall frost around Oct 25, giving roughly 198 frost-free growing days. That window comfortably fits kale's 55-day cycle, with room for a second succession planting if you time it right.
Get a head start by sowing seeds indoors around Mar 6, roughly 5 weeks before your last frost. Move the seedlings outside around Mar 20. Give each plant about 12 inches of space in full sun to part shade.
Zone 7a specific growing notes
In zone 7a (Nashville TN, Oklahoma City OK), your 198-day growing season means kale should be one of your first spring plantings. Cool-season crops thrive in the mild part of your growing window. Monitor soil temperature ā kale germinates best when soil is 40-75Ā°F.
Your first fall frost around Oct 25 means your last possible harvest is roughly late Oct. For a continuous supply, consider succession planting every 2-3 weeks from Mar 20 through mid-season.
Pro tip for kale
Frost converts starches to sugarākale harvested after a light freeze tastes noticeably sweeter. Harvest the oldest outer leaves first and the plant keeps producing from the center for months.
Troubleshooting kale
Cabbage aphids cluster in dense gray colonies inside leaf crevices and growing tips. A strong jet of water knocks most off. For persistent infestations, insecticidal soap or neem oil applied to leaf undersides works well.
Growing kale in containers
One plant per 3-gallon pot minimum. Kale is ornamental enough for mixed flower plantersāvarieties like 'Red Russian' and 'Lacinato' (dinosaur kale) look striking alongside annual flowers.
Can you plant kale twice a year?
Yesāspring and fall crops are standard practice. In zones 5+, start fall kale indoors in early July and transplant by early August. Mature kale survives winter down to zone 5 with minimal protection.
Frequently asked questions
When should I plant kale in zone 7a?
Direct sow or transplant around Mar 20. If starting from seed indoors, sow around Mar 6. Because kale is a cool-season crop, it tolerates light frost and can go out around Mar 20, before zone 7a's average last frost on Apr 10.
How long does kale take to grow in zone 7a?
About 55 days from sowing to first harvest. A Mar 20 planting in zone 7a is typically ready to pick from around May 14. Zone 7a has about 198 frost-free days ā plenty of time for a second succession planting.
How far apart should I space kale?
Space kale about 12 inches apart in full sun to part shade. This gives each plant enough room for roots to spread and leaves to catch sunlight without competing.
What is the best tip for growing kale?
Frost converts starches to sugarākale harvested after a light freeze tastes noticeably sweeter. Harvest the oldest outer leaves first and the plant keeps producing from the center for months.
What are common problems with kale and how do I fix them?
Cabbage aphids cluster in dense gray colonies inside leaf crevices and growing tips. A strong jet of water knocks most off. For persistent infestations, insecticidal soap or neem oil applied to leaf undersides works well.
Can I grow kale in a container?
One plant per 3-gallon pot minimum. Kale is ornamental enough for mixed flower plantersāvarieties like 'Red Russian' and 'Lacinato' (dinosaur kale) look striking alongside annual flowers.
Can I plant a second crop of kale for fall harvest?
Yesāspring and fall crops are standard practice. In zones 5+, start fall kale indoors in early July and transplant by early August. Mature kale survives winter down to zone 5 with minimal protection.
What grows well next to kale?
Good companion plants for kale are beets, onion, herbs. Avoid planting near warm-season crops that compete for space and nutrients. Kale also benefits from crop rotation ā do not plant it in the same spot year after year.