Radish Black Spanish Round
$4.49
Raphanus Sativus
- Seed Count 60
- Quick Cropper
- Annual
Only 3 left in stock
Description
With its inky black skin and pure white flesh, the Radish Black Spanish Round is a unique heirloom variety that has been popular since the 1500s. It is a winter radish that produces globe-shaped roots around 9 cm in diameter. The thick black skin resembles that of a rhinoceros. It is so rough and thick that at first glance the black root seems almost inedible. But that craggy, tough exterior is just what protects the tender, spicy, crisp, pure-white flesh.
Black radishes are sharp when raw and add a nice bite to salads and raw vegetable plates. When sliced paper-thin, they make beautiful garnishes. Scrub these radishes clean in order to keep the brilliant contrast between the black peel and the white interior. Black radishes also good in oven bakes and are delicious when cut into wedges and added to pans of roasted vegetables.
The Black Spanish Round radish is considered a winter radish but can be planted in both spring and autumn. The thick, tough skin protects months of storage in the ground, in the root cellar or in the fridge. They are reliable, they last forever in the garden and in storage, and are one of the easiest things you will ever grow.
| Method: Sow direct or seedlings | Soil Temp: 8°C - 30°C |
| Cool Mountain: Jan - Dec | Position: Part sun |
| Arid: Jan - Dec | Row Spacing: 5 cm |
| Temperate: Jan - Dec | Planting Depth: 5 mm |
| Sub Tropical: Jan - Dec | Harvest: 50 Days |
| Tropical: Apr - Jul | Plant Height: 15 cm |
Soil Preparation
Ideal Soil:
- Loose, well draining soil – prevents splitting.Â
- pH: 5.8–6.8. Test with a kit; amend with lime if acidic or sulphur if alkaline.Â
Preparation:
- Loosen soil to 15–20 cm depth.
- Mix in compost or aged manure for fertility.
Sowing Seeds
Depth:
1 cm.
Spacing:
- 5 cm apart.Â
Germination:
- 3–7 days in 8–30°C soil.
- Thin seedlings to 5 cm apart to avoid overcrowding.
Watering
- Keep soil consistently moist (not waterlogged).Â
- Water lightly daily in hot/dry weather.
- Mulch with straw to retain moisture and regulate temperature.
Fertilising
- Use balanced fertiliser at planting.
- Avoid excess nitrogen promotes leafy tops, not roots.Â
- Side dress with compost mid growth for heavy feeders like Daikon.
Pest & Disease Management
Pests:
- Flea beetles – Use row covers or companion plants  such as nasturtiums and marigolds.Â
- Aphids – Spray with soapy water or attract ladybugs.Â
Diseases:
- Root rot – Avoid overwatering. Ensure good drainage.Â
- Clubroot in brassicas – Rotate crops; avoid planting where brassicas grew recently.
Harvesting
Timing:
- 7 weeks – check size at 2–3 cm diameter.Â
Method:
- Pull gently from soil. Harvest promptly to avoid woody texture.Â
Storage:
- Remove greens, store in fridge for up to 2 weeks.
Companion Planting Guide
Good Companions:
- Lettuce/Spinach – Shallow roots; no competition.
- Carrots – Radishes break soil; carrots fill space.  Â
- Peas/Beans – Fix nitrogen; boost growth.
- Nasturtiums – Repel aphids, beetles.
- Chervil – Deters slugs.
Avoid:
- Hyssop inhibits radish growth.Â
- Potatoes and cucumbers compete for nutrients/space.
Common Mistakes
Overcrowding:
- Thin seedlings early.Â
Inconsistent watering:
- Causes splitting or bitterness.Â
Late harvesting:
- Roots become woody.Â
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