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Haku — Brassicas | DarkGrow Seed Bank

Name: Haku
Brand: DarkGrow Seed Bank

55days to harvest

7-10 daysdays to germinate

Z5–9USDA zones

Easydifficulty

F1 hybrid

Sowing

Start indoors 4-6 weeks before last frost, or direct sow in mid to late summer for fall harvest

Cultivation

Sun: Full sun to part shade
Water: High — consistent moisture needed
Soil: Well-drained loam, pH 6.0-7.5
Spacing: 18-24 inches
Height: 3 feet
Season: Warm season annual

Appearance & flavour

Colour: Light green
Size: 11"
Shape: Cylindrical head
Flavour: Mild, tender, and slightly sweet with crisp leaves; less peppery than storage cabbages.

In the kitchen

Stir-fries, slaws, salads, Asian dishes, steaming, quick cooking

Pests, disease & resistance

Pests: Cabbage looper, flea beetles, diamondback moths, aphids
Diseases: Clubroot, black rot, fusarium wilt
Resistance: Club Root (Intermediate); Downy Mildew (Intermediate)

Planting calendar by USDA zone

Zone	Start indoors	Transplant	Direct sow	Harvest
1	April – May	June – July	June – July	July – September
2	April – May	June – July	May – July	July – September
3	March – April	May – June	May – June	June – October
4	March – April	May – June	April – June	June – October
5	February – March	April – May	April – May	June – November
6	February – March	April – May	April – May	May – November
7	February – March	April – May	March – May	May – November
8	January – February	March – April	March – April	April – December
9	January	February – March	February – March	March – December
10	January	February – March	January – March	March – December
11	January	January – February	January – February	February – December
12	January	January – February	January – February	February – December
13	January	January – February	January – February	February – December

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

NasturtiumsActs as trap crop for aphids and flea beetles, protecting brassicas from these pests

MarigoldsRepels cabbage worms, aphids, and other brassica pests with natural compounds

DillAttracts beneficial insects like parasitic wasps that control cabbage worms

OnionsRepels cabbage maggots, aphids, and flea beetles with sulfur compounds

LettuceProvides ground cover and efficient space usage without competing for nutrients

CarrotsDifferent root depths prevent competition while carrots benefit from brassica soil conditioning

CeleryRepels cabbage worms and provides natural pest deterrent through aromatic compounds

SpinachCool-season companion that maximizes garden space without nutrient competition

Avoid

StrawberriesBrassicas can stunt strawberry growth and negatively affect fruit production

TomatoesAllelopathic effects inhibit brassica growth and both compete for similar nutrients

Pole BeansCan inhibit brassica growth and create too much shade for optimal development

Nutrition (per 100 g)

Calories (per 100 g): 31
Protein (g): 2.57
Fat (g): 0.34
Carbohydrate (g): 6.27
Fibre (g): 2.4
Vitamin A (µg): 8
Vitamin C (mg): 91.3
Vitamin E (mg): 0.15
Vitamin K (µg): 102
Vitamin B6 (mg): 0.191
Folate (µg): 65
Calcium (mg): 46
Iron (mg): 0.69
Magnesium (mg): 21
Phosphorus (mg): 67
Potassium (mg): 303
Zinc (mg): 0.42
Selenium (µg): 1.6

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Where to buy seed and equipment

Some links are affiliate links. If you buy through them we may earn a commission at no extra cost to you.

Growing it? There is a full cultivation guide at the brassicas growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

Haku

Sowing

Cultivation

Appearance & flavour

In the kitchen

Pests, disease & resistance

Planting calendar by USDA zone

Companion planting

Avoid

Nutrition (per 100 g)

Where to buy seed and equipment

Grown Haku?

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