Grown Nero Tondo Black Spanish Round Radish?

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Nero Tondo Black Spanish Round Radish — Root vegetables

55-65days to harvest

7-14days to germinate

Z2–11USDA zones

Easydifficulty

HeirloomContainer friendly

Sowing

Direct sow in mid to late summer for fall harvest. Plant seeds 1/2 inch deep, thin when seedlings are 2 inches tall.

Cultivation

Sun: Full sun to partial shade
Water: 1 inch per week, consistent moisture
Soil: Well-drained, fertile soil with good organic content
Soil pH: 6.0-7.0
Spacing: 3-4 inches
Height: 0-3 feet
Season: Cool season

Appearance & flavour

Colour: Black skin with bright white flesh
Size: 3-4 inches diameter, round
Shape: Globe-shaped, slightly flattened
Flavour: Mild and sweet with crisp texture, less pungent than typical winter radishes

In the kitchen

Fresh eating, salads, roasting, braising, pickling, winter storage

Pests, disease & resistance

Pests: Flea beetles, root maggots, cabbage worms
Diseases: Clubroot, black rot, downy mildew
Resistance: Good cold tolerance and general disease resistance

Planting calendar by USDA zone

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

Companion planting

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

LettuceQuick-growing leafy green that doesn't compete for root space and can be harvested before radishes mature

CarrotsRadishes break up soil for carrots and mature faster, allowing carrots more space as they develop

SpinachCool-season companion with shallow roots that won't interfere with radish bulb development

ChivesRepels aphids, flea beetles, and other pests that commonly attack radishes

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

MarigoldsDeters nematodes and other soil-borne pests that can damage radish roots

PeasFixes nitrogen in soil and provides natural trellis shade for cool-season radishes

CucumberRadishes repel cucumber beetles while cucumbers provide ground shade for radish roots

Avoid

HyssopInhibits growth of radishes and other brassicas through allelopathic compounds

Grape vinesStunts radish growth and development through root competition and chemical inhibition

TurnipsSame family brassica that competes for identical nutrients and attracts same pests like flea beetles

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

← PreviousAll Seasons White Daikon Next →Mokum Carrot

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.

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 Nero Tondo Black Spanish Round Radish?

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