Last edited on 2 Nov 2026. View history

black Spanish radish Black Spanish Radish

Raphanus sativus

A variety of radish

How to sow black Spanish radish: Direct seed outdoors

Sun requirement for black Spanish radish: Plant in Full Sun

A large, round radish with black skin and white flesh, from the Harrington collection. Mild, traditionally eaten thinly sliced and raw, and good for lactic pickling. Direct sow, or sow in trays in autumn or early spring and transplant at the first two leaves, 10 to 15 cm apart on the diagonal.

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Black spanish radish facts

Lifespan

Annual living and reproducing in a single year or less

Growing black Spanish radishes

  1. Dig the bed fine 1 week before sowing
  2. Water regularly at sowing every week
  3. Thin the seedlings 1 week after sowing
  4. Sow another batch 2 weeks after sowing every 2 weeks
  5. Pull the radishes at first harvest
  6. Pull out plants that have bolted 3 weeks after first harvest

Plant black Spanish radishes with

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Ecological requirements

Data from the FAO EcoCrop database for Raphanus sativus Bailey

Family / Taxonomy Magnoliopsida
Dilleniidae
Capparales
Cruciferae
Optimal temperature 12 - 26 °C
Absolute temperature 10 - 37 °C
Optimal rainfall 1000 - 1500 mm/year
Absolute rainfall 800 - 2800 mm/year
Optimal soil pH 6.0 - 7.0
Absolute soil pH 4.3 - 8.3
Crop cycle 50 - 80 days
Life form herb
Life span annual
Habit erect
Optimal soil depth deep (>>150 cm)
Optimal soil texture medium, light
Optimal soil fertility high
Optimal soil drainage well (dry spells)
Optimal soil salinity low (<4 dS/m)
Photoperiod short day (<12 hours), neutral day (12-14 hours), long day (>14 hours)
Optimal light clear skies

Licensed under CC-BY-4.0 .

Food and Agriculture Organization of the United Nations (2025) ECOCROP, the crop ecological requirements database. Version 1. https://data.apps.fao.org/catalog/dataset/ecocrop. Accessed through the CGIAR Climate Action Data Hub, https://cgiar-climate-data-hub.github.io/catalog/ecocrop_1/.

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