One Kilo Slow Bolt Napa Cabbage Seeds

This packet sows up to 43 feet.
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. Cabbage is most reliable when sown in mid- to late summer for fall harvest, although because this napa is quick to mature and slow to bolt, it's also a good candidate for spring sowing. Grows best at 60°-65°F.
$2.49 300 mg

Botanical Name: Brassica rapa var. pekinensis (hybrid)

Days to Maturity: 50–55 days

Family: Brassicaceae

Native: Widespread, probably Eurasia

Hardiness: Frost-tolerant biennial, grown as an annual

Plant Dimensions: 8" tall, 10" 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: 1 to 2 weeks after your average last frost date, when soil temperature is at least 55°F, ideally 75°–85°F, or 8 to 10 weeks before your average first fall frost date. In Mild Climates, sow in the fall for cool–season harvest.

When to Start Inside: Recommended for spring planting. 4 to 6 weeks before your average last frost date, or 8 to 10 weeks before average first fall frost for fall crop. Start in biodegradable pots that go directly in the ground for minimal transplant shock. See more spring planting tips inside the packet.

Days to Emerge: 10–15 days

Seed Depth: ¼"

Seed Spacing: A group of 3 seeds every 20"

Row Spacing: 24"–30"

Thinning: When 3" tall, thin (and eat!) to 1 every 20"

Harvesting: Fall crops should be harvested before a hard frost (though it may be hardy down to 28?F or lower when protected with row covers). Spring crops should be harvested before seed stalks form. Harvest heads after they firm up and are solid. Cut just above the soil surface (young, tender, edible leaves may sprout from stump!) As you are thinning seedlings, use the tender young leaves in salads, or you can harvest whole plants when they are young, 3"-4" tall.

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One Kilo Slow Bolt Napa Cabbage Seeds Reviews

2 reviews
Good germination and grew well
Review star icon Review star icon Review star icon Review star icon Review star icon 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.
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
Review star icon Review star icon Review star icon Review star icon Review star icon 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.

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