Root vegetables
55-65days to harvest
4-7days to germinate
Z2–11USDA zones
Easydifficulty
Heirloom

Sowing

Direct sow in late summer for fall harvest, 10-12 weeks before first frost. Spring sowings bolt quickly in heat.

Cultivation

Sun
Full sun to partial shade
Water
1-1.5 inches per week, consistent moisture
Soil
Deep, loose, well-drained soil with good organic matter
Soil pH
6.0-7.0
Spacing
4-6 inches
Height
0-3 feet
Season
Cool season

Appearance & flavour

Colour
Purple skin with white flesh
Size
8-12 inches long, 2-3 inches diameter
Shape
Long, cylindrical tapered root
Flavour
Mild, sweet, less peppery than small radishes with crisp texture

In the kitchen

Pickling, stir-fries, soups, fresh slicing, fermentation, Asian dishes

Pests, disease & resistance

Pests
Flea beetles, cabbage root maggot, aphids
Diseases
Clubroot, black rot, downy mildew
Resistance
Good cold tolerance and disease resistance

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1——June – JulyAugust – September
2——May – JulyJuly – September
3——May – JuneJuly – October
4——April – JuneJune – October
5——April – MayJune – November
6——April – MayJune – November
7——March – MayMay – November
8——March – AprilMay – December
9——February – MarchApril – December
10——January – MarchMarch – December
11——January – FebruaryFebruary – December
12——January – FebruaryFebruary – December
13——January – FebruaryFebruary – December

Companion planting

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

CarrotsDifferent root depths prevent competition, radishes break up soil for carrots
LettuceRadishes mature quickly and break up soil for shallow lettuce roots
SpinachCool-season crops with similar growing requirements, radishes improve soil structure
PeasPeas fix nitrogen in soil which benefits radish growth
ChivesRepel root maggots and flea beetles that commonly attack radishes
NasturtiumsTrap crop for flea beetles and aphids, protecting radish leaves
MarigoldsRepel nematodes and other soil pests that damage radish roots
CucumbersRadishes repel cucumber beetles and squash bugs

Avoid

HyssopInhibits growth of radishes and other brassica family plants
TurnipsSame family (brassica) leads to increased pest pressure and soil nutrient depletion
Grape VinesRadishes can stunt grape growth and compete for soil nutrients

Nutrition (per 100 g)

Calories (per 100 g)
16
Protein (g)
0.68
Fat (g)
0.1
Carbohydrate (g)
3.4
Fibre (g)
1.6
Sugars (g)
1.86
Vitamin A (µg)
0
Vitamin C (mg)
14.8
Vitamin E (mg)
0
Vitamin K (µg)
1.3
Vitamin B6 (mg)
0.071
Folate (µg)
25
Calcium (mg)
25
Iron (mg)
0.34
Magnesium (mg)
10
Phosphorus (mg)
20
Potassium (mg)
233
Zinc (mg)
0.28
Selenium (µg)
0.6

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 root vegetables growing guide.

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

DarkGrow forum

Grown Purple Daikon Radish?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other root vegetables with a comparable time to harvest, so a season that suits Purple Daikon Radish suits these too.

Browse all 56 root vegetables