One Kilo Slow Bolt Napa Cabbage Seeds

This packet sows up to 43 feet.
5 out of 5 stars
(5 reviews)
Availability: In Stock
Also called napa cabbage, 'One Kilo Slow Bolt' has a delicate flavor, a soft texture in between that of lettuce and regular cabbage, and tight heads have a creamy yellow interior. Grows with ease in fall, and can be sown in spring if care is taken to protect young plants from temperatures of 50°F or below, which may cause plants to bolt. Grows best at 60°-65°F.
$2.69 300 mg (~80 seeds)

Botanical Name: Brassica rapa var. pekinensis (hybrid)

Days to Maturity: 50–55 days

Family: Brassicaceae

Native: Unknown

Hardiness: Frost-tolerant biennial, grown as an annual

Plant Dimensions: About 9" tall, 20" wide including lateral leaves; the head is about 11" tall and 7" wide

Variety Information: Outer leaves are green and white with a yellowish-green interior. Leaves have a lightly crinkled texture at maturity and have a sweet flavor. Mature, trimmed heads weigh 2–2 ½ pounds. 'One Kilo Slow Bolt' is a wong bok/napa type cabbage.

Attributes: Good for Containers

When to Sow Outside: RECOMMENDED. 2 to 4 weeks before your average last frost date for a summer crop or 8 to 10 weeks before your average first fall frost date for a fall crop. Ideal soil temperature for germination is 75°-85°F. Persistent temperatures of 50°F or below while plants are young can cause bolting (premature flowering), cover as necessary.

When to Start Inside: 4 to 6 weeks before your average last frost date transplanting after your average last frost date, and 4 to 6 weeks before transplanting outdoors in summer for a fall crop. Sow in biodegradable pots to avoid root disturbance. Mild Climates: Sow in fall for a cool-season harvest.

Days to Emerge: 7–12 days

Seed Depth: ¼"

Seed Spacing: A group of 3 seeds every 12"–18"

Row Spacing: 24"–30"

Thinning: When 3" tall, thin (and eat!) to 1 every 12"–18"

Harvesting: Harvest heads when they are well developed, firm, and solid when squeezed. Cut off heads at base with a sharp knife. Cabbages left in the ground beyond maturity are more subject to disease and splitting. Harvest in the morning if possible. If harvested in the heat, dunk in ice water to reduce "field heat" and increase storage time. Allow to drain before storing.

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One Kilo Slow Bolt Napa Cabbage Seeds Reviews

5 reviews

Good germination and grew well

5 out of 5 stars Oct 22, 2019
This was the first time I tried growing Napa cabbage. I grew it for fall. Mid-July, I started it in 3 inch pots, transplanted in 6 inch pots which I grew outside on my cart. I was able to keep it in the shade during the hottest part of the day, kept them covered with white tulle ( not directly on the plants) and well watered. I found the plants I grew in containers covered with tulle had the least insect damage, but I did get 2 out of 4 Napa cabbages from the ones I planted directly into the garden bed...the outer leaves of those had several holes. I will definitely grow this again but only in covered containers. The flavor and texture is excellent. The one that had the most damage after peeling back a lot of leaves is about 1.5 pounds and the other is around 2.5 to 3 pounds.
Doreen from OH
Owner Response: Hi Doreen, Thanks for leaving a review. You are right, covering these plants with row cover from the moment of transplant really helps to avoid cabbage loopers or cabbage moths. You can also use Bt, a bacteria approved for organic use, to help stave off those hungry caterpillars. Happy growing!

One Kilo Slow Bolt Nappa Cabbage

5 out of 5 stars Jul 5, 2020
This variety performed wonderful for us this year! We are on our second flush and are looking foreword to trying to make a third planting as well. It held up amazing for frost tolerance early and seems to be doing okay in the heat. Delicious and versatile to use. Excellent shredded for tacos as well as stir fry and Kimchi! The leaf ends are a good sub for lettuce during the hot summer while the crispy root ends for stir fry.


5 out of 5 stars Jul 9, 2021
I planted these for a late fall harvest. They gave me beautiful results. Each cabbage was large, firm and crispy. I've never seen such a nice Napa Cabbage for sale in any produce section.
vicki from TX

Still Singing It's Praises

5 out of 5 stars Nov 29, 2021
I reviewed this veg after growing it last year. I'm back again to say that my great results were not a fluke. This seed is a super performer for me again this year. I just picked a 4 lb armful, and that is without the large outer leaves.
Vicki from TX

Best Napa Cabbage

5 out of 5 stars Jun 20, 2022
This Napa cabbage is fantastic! The heads were HUGE and sweet. Can't recommend this highly enough!
Barbara from NM

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