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One Kilo Slow Bolt Napa Cabbage Seeds

One Kilo Slow Bolt Napa Cabbage Seeds

SKU:0276

4.6
Rated 4.6 out of 5 stars
24

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.

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~0.25 g

(~65 seeds)

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  • Variety Info
  • Sowing Info
  • Growing Info
  • Learn More

Variety Info

Days to Maturity: 50–55 days

Family: Brassicaceae

Native: Unknown

Hardiness: Frost-tolerant biennial, grown as an annual

Exposure: Full sun to part shade

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

Variety Info: 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

Non GMO Project

Sowing Info

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"

Your hardiness zone is

Growing Info

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.

4.6
Rated 4.6 out of 5 stars
Based on 24 reviews
Total 5 star reviews: 19 Total 4 star reviews: 3 Total 3 star reviews: 0 Total 2 star reviews: 2 Total 1 star reviews: 0
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24 reviews
  • Elizabeth O.
    Rated 5 out of 5 stars
    4/26/25
    5 Stars

    On the recommendation of a local friend (SE TX, Zone 9) I bought these from a local nursery. They germinated quickly & grew well. My only problem was I started them about 6 weeks late. But they grew into massive plants & I had to harvest due to early hot weather. So the heading process didn't really happen. Last year (2024) they did make a head but the snails & loopers got them. Still. We made some good kimchi out of them. Sorry I couldn't include pics of the plants as I most have deleted. But with 2 years of success (in spite of user error), this is definitely a great selection.

  • Nancy
    Rated 5 out of 5 stars
    10/25/24
    5 Stars

    This is the first time I have grown this Napa Cabbage. Planted seeds Sept 3 in the Atlanta area and as the package said, I am harvesting BIG cabbages about 50 days later. I am searching for stuffed cabbage recipes as I need to use what I don't end up sharing with neighbors. Will definitely grow this seed again in the spring.

    Which best describes you as a gardener? Beginner
  • Freda T.
    Verified Buyer
    Rated 5 out of 5 stars
    8/25/24
    5 Stars

    Were growing well a week ago before I got sick. I don't know about now since I have been in n the hospital. I have not seen them.

    Which best describes you as a gardener? Intermediate
  • Melana M.
    Verified Buyer
    Rated 5 out of 5 stars
    8/3/24
    5 Stars

    Was shocked to get 100% germination! Popped up out of that seed starter mix like a jack in the box! I am anxious for the weather here in AZ to cool down so I can get these beauties planted outdoors.

    Which best describes you as a gardener? Intermediate
  • Daniela C.
    Rated 2 out of 5 stars
    7/7/24
    2 Stars

    0% germination

    Which best describes you as a gardener? Beginner