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Botanical Interests

One Kilo Slow Bolt Napa Cabbage Seeds

One Kilo Slow Bolt Napa Cabbage Seeds

Regular price $3.49
Sale price $3.49 Regular price
~0.25 g (~65 seeds)
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Product Details

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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  • Variety Info
  • Sowing Info
  • Growing Info

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

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"

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 23 reviews
Total 5 star reviews: 18 Total 4 star reviews: 3 Total 3 star reviews: 0 Total 2 star reviews: 2 Total 1 star reviews: 0
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23 reviews
  • Nancy
    Rated 5 out of 5 stars
    Oct 25, 2024
    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
  • Anthony C.
    Rated 5 out of 5 stars
    Apr 19, 2024
    5 Stars

    First time growing, Napa Cabbage, we had great germination and grew some big cabbages , they did not disappoint 🥬

    Which best describes you as a gardener? Intermediate
  • Maria D.
    Verified Buyer
    Rated 5 out of 5 stars
    Apr 7, 2024
    5 Stars

    I am so excited this year 2024 sowing crop season. I have already planted many different seeds and am happy to see them seedlings grow. It has been a blessing to have so many kinds of seeds and variety this year. Thanks to Botanical Interest ! And nice and organized the seeds package are. Any one can learn to have a green thumb.

    I can enjoy my gardening and like any other gardener one seed is not enough.

    Which best describes you as a gardener? Intermediate
  • Alex R.
    Verified Buyer
    Rated 2 out of 5 stars
    Mar 12, 2024
    2 Stars

    Not the first time i buy one kilo from botanical Interest and I’m pretty sure i was short changed, or is it that you reduced the weight of seeds per pack. And again i will comment about past shiso seed purchase that had a poor germination % close to cero, please make this right, I’ve bought thousands of dollars in seeds from botanical interest and about 50 dlls worth have been bad seeds. Best regards.

    Huerto Don Ciccio

    Which best describes you as a gardener? Professional
    EG Profile picture for Epic Gardening
    Epic Gardening
    Mar 12, 2024

    Hey Alex,

    I sincerely appreciate you taking the time to share your thoughts in a review. I've reached out to you via email to offer assistance and address any concerns you may have. Your feedback is invaluable to us, and we are committed to ensuring your experience is positive. Thank you once again for your input. Keep on growing 🌻️

  • Colton F.
    Verified Buyer
    Rated 4 out of 5 stars
    Mar 5, 2024
    4 Stars

    These were fun to grow. 100% germination. Started them in hydroponic system, then transferred to my greenhouse! They look great.

    Which best describes you as a gardener? Beginner
    EG Profile picture for Epic Gardening
    Epic Gardening
    Mar 5, 2024

    Hey Colton, Thanks so much for sharing your photo! Your plants look so healthy! Keep on growing 🌻️