Sea Kale Growing Guide
Brassicaceae family
Days to Harvest365 days
SunlightPart Sun / Part Shade
Frost ToleranceHeavy
Spacing24/sqft
Germination5-10 days
HardinessVery Hardy
Germ. Temp65°F
Start Indoors6 weeks before last frost
Growth Stages
- Seedling
- Early Vegetative
- Late Vegetative / Harvest Ready
Planting Dates by Zone
| Zone | Start Indoors | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 1a | Apr 13 | Apr 27 | Apr 27 | Jun 11 |
| Zone 1b | Apr 13 | Apr 27 | Apr 27 | Jun 11 |
| Zone 2a | Apr 3 | Apr 17 | Apr 17 | Jun 1 |
| Zone 2b | Apr 13 | Apr 27 | Apr 27 | Jun 11 |
| Zone 3a | Apr 10 | Apr 24 | Apr 24 | Jun 8 |
| Zone 3b | Apr 3 | Apr 17 | Apr 17 | Jun 1 |
| Zone 4a | Mar 24 | Apr 7 | Apr 7 | May 22 |
| Zone 4b | Mar 20 | Apr 3 | Apr 3 | May 18 |
| Zone 5a | Mar 17 | Mar 31 | Mar 31 | May 15 |
| Zone 5b | Mar 17 | Mar 31 | Mar 31 | May 15 |
| Zone 6a | Mar 17 | Mar 31 | Mar 31 | May 15 |
| Zone 6b | Mar 4 | Mar 18 | Mar 18 | May 2 |
| Zone 7a | Mar 4 | Mar 18 | Mar 18 | May 2 |
| Zone 7b | Feb 27 | Mar 13 | Mar 13 | Apr 27 |
| Zone 8a | Feb 22 | Mar 8 | Mar 8 | Apr 22 |
| Zone 8b | Feb 8 | Feb 22 | Feb 22 | Apr 8 |
| Zone 9a | Feb 6 | Feb 20 | Feb 20 | Apr 6 |
| Zone 9b | Jan 27 | Feb 10 | Feb 10 | Mar 27 |
| Zone 10a | Jan 9 | Jan 23 | Jan 23 | Mar 9 |
| Zone 10b | Dec 17 | Dec 31 | Dec 31 | Feb 14 |
| Zone 11a | Dec 17 | Dec 31 | Dec 31 | Feb 14 |
| Zone 11b | Dec 4 | Dec 18 | Dec 18 | Feb 1 |
| Zone 12a | Nov 20 | Dec 4 | Dec 4 | Jan 18 |
| Zone 12b | Nov 20 | Dec 4 | Dec 4 | Jan 18 |
| Zone 13a | Nov 20 | Dec 4 | Dec 4 | Jan 18 |
| Zone 13b | Nov 20 | Dec 4 | Dec 4 | Jan 18 |
Frequently Asked Questions
How long does it take to grow Sea Kale?
Sea Kale takes approximately 365 days from planting to harvest.
How much sun does Sea Kale need?
Sea Kale requires part sun / part shade.
How far apart should I plant Sea Kale?
Plant Sea Kale at 24/sqft using square foot gardening spacing.
Can Sea Kale survive frost?
Sea Kale is tolerant of heavy frost and can withstand freezing temperatures.
How long does Sea Kale take to germinate?
Sea Kale seeds germinate in 5-10 days at an optimal temperature of 65°F.
When should I start Sea Kale seeds indoors?
Start Sea Kale seeds indoors 6 weeks before your last frost date, then transplant -4 weeks after last frost.
Plan Your Sea Kale Garden
Track Sea Kale from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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