One Kilo Slow Bolt
Chinese Cabbage · Napa
Hybrid
Brassica rapa subsp. pekinensis
★ 2.01 review · 1 source
Brassicaceae (Mustard family) · Genus: Brassica
Characteristics
Color
Green
Flavor
MildSweet
Growth Form
Head
Growth Habit
Dwarf / Compact
Intended Use
Fresh / Salad
Texture
Tender
Trait
Slow-Bolting / Heat Tolerant
About the Plant
Life Cycle
Biennial
Harvest year 1, seeds year 2
❄
Hardiness
Cool-Season/Half-Hardy
☀
Exposure
Full Sun
💧
Moisture
Evenly Moist
🌍
Origin
Japan
🌱
Germination
4–12 days
at 40–100 °F
⏳
Days to Maturity
50–60 days
Plant Height
Up to 12 in
⚖
Fruit Weight
32–40 oz
How to Plant
🏠
Start Indoors
4-6 Weeks Before Last Frost
Transplant
0-2 Weeks After Last Frost
🌸
Direct Sow (Spring)
0-2 Weeks After Last Frost
🍂
Direct Sow (Fall)
10-12 Weeks Before First Frost
Planting Depth
1/4–1/2 in
Seed Spacing
2–4 in
Row Spacing
18–30 in
Thin To
12–18 in
🪴
Container Friendly
Yes
🌡
Optimal Soil Temp
55–85 °F
🌡
Soil Temp
40–100 °F
🌡
Air Temp
20–80 °F
When to Plant in Your Area
Enter your US ZIP code to see planting dates for your area. Sign up to save it.
Available From (1)
Reviews (1)
Marcus from SeedrateZone 6a
★★☆☆☆August 26, 2026
Seedrate's data is community-reviewed and always being refined. Mistakes happen — if something looks off, please flag it.