Botanical Interests
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Product Details
Product Details
This kale has it all. Beautiful, ruffled leaves are tasty and have amazing color. Extremely cold tolerant, 'Redbor's' purple color and curliness intensifies, and flavor sweetens as temperatures drop in the fall; plants can last even through hard freezes. Sow with pansies, violas, and snapdragons for long-lasting fall color. Looks great in containers. Seeds may have an inert organic coating.
Your hardiness zone is
- Variety Info
- Sowing Info
- Growing Info
Variety Info
Days to Maturity: 50–60 days
Family: Brassicaceae
Native: Europe
Hardiness: Biennial grown as an annual, kale is very cold hardy and may overwinter in milder climates.
Exposure: Full sun
Plant Dimensions: 12"–20" tall, 10"–18" wide
Variety Info: Finely curled leaves start out blue-green and deepen to purple/magenta as temperatures drop. Curly type kale.
Attributes: Frost Tolerant, Cold Tolerant, Good for Containers
Sowing Info
When to Sow Outside: 1 to 2 weeks before your average last frost date, when soil temperature is above 45°F for spring/summer crop; 10 to 12 weeks before your average first fall frost date for fall crop; and in mild climates, fall for very early spring crop.
When to Start Inside: RECOMMENDED: 4 to 6 weeks before your average last frost date. For a fall crop, start 12 to 14 weeks before your average first fall frost date, transplanting after 4 to 6 weeks. Ideal soil temperature for germination is 65°–85°F.
Sprouts in: 5–10 days
Plant Seeds (Depth): ¼"
Space Seeds: A group of 3 seeds every 18"
Row Spacing: 24"
Thinning: When 1" tall, thin to 1 every 18"
Growing Info
Harvesting: Outer leaves can be harvested as baby greens when 2"–3" tall, any time when full-sized beginning with the lowest, or the whole plant can be cut off at ground level at maturity. For fast regrowth, harvest up to only ⅓ of the plant at a time.
- AnnieVerified BuyerRated 5 out of 5 starsMay 5, 2026A staple in our garden
We love this kale! It’s beautiful and delicious. Our two favorite kale varieties are this variety and blue dwarf kale. The color variation makes a beautiful kale salad. It’s a smaller plant than traditional kale, and can range from deep purple to purple-green.
Which best describes you as a gardener? IntermediateEGEpic GardeningMay 6, 2026Hey Annie,
We love that Redbor Kale Seeds have become a staple in your garden! It sounds like you've discovered the perfect combination with the Redbor and blue dwarf kale - those color variations must make for absolutely stunning salads! We're thrilled you're enjoying both the beauty and delicious taste of this variety. There's something so satisfying about having that gorgeous purple to purple-green range right in your own garden! Thanks for sharing how much you love growing our Redbor Kale! Keep on growing 🌻️
- Kat C.CA, United StatesRated 5 out of 5 starsMar 7, 2026Good Things Come To Those Who Wait
These took a while to germinate, but my patience was rewarded with some amazingly beautiful and tasty curly kale. In fact, my reward is almost too great- time to find some new kale recipes!
Also, the packet art is gorgeous. I hope Botanical Interests considers adding it to their art prints.
Which best describes you as a gardener? IntermediateWho do you grow for? YourselfHow do you prefer to grow? ContainerEGEpic GardeningMar 10, 2026Hey Kat,
We love to hear your patience paid off so beautifully with our Redbor Kale Seeds! We're thrilled you're enjoying both the amazing flavor and that gorgeous curly texture. What a wonderful "problem" to have with such an abundant harvest that you need new recipes! And thank you so much for the kind words about the packet art - we'll definitely pass that feedback along about adding it to art prints. Thank you for choosing us and for sharing this wonderful growing experience with us. Keep on growing 🌻️
- Tarcela M.Verified BuyerRated 5 out of 5 starsNov 27, 20245 Stars
These pictures don’t do this Red Bore Kale justice. It is beautiful. Haven’t tasted it yet but I am hopeful that it tastes just as good as it looks. Growing in raised beds. Started in garage greenhouse prior to transplanting.
- Mia P.Verified BuyerRated 5 out of 5 starsJan 25, 20255 Stars
Always a great experience buying from Botanical Interests!
- Sidney S.Verified BuyerRated 5 out of 5 starsDec 2, 20245 Stars
Your seeds have always come thru. You guys keep up the good work .
