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Annual Biennial

Raphanus sativus 'Scarlet Globe'

radish 'Scarlet Globe'

Has leaves about 15cm high and round roots with red skin and crisp white flesh with a mild flavour. Radishes, Raphanus sativus, are annuals or biennials which germinate fast and grow fast, with lobed, dark green leaves to about 15-20cm high, and succulent, sharp-tasting edible enlarged taproots which can be harvested about four weeks after sowing, and can be round, tapering, or cylindrical, and have red, white, green, yellow, purple, or black skin, while the flesh is usually white but may be red or purple; if plants are left long enough, for example when grown as a cover crop or green manure, to grow to about 90cm then they can produce white or pale lilac flowers which provide both nectar and pollen for bees.

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H2
Botanical details
Family
Brassicaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

Raphanus can be annual, biennial or perennial herbaceous plants, often with lyrate, glaucous leaves, small, four-petalled flowers and indehiscent fruits. Edible species are cultivated as annual vegetables (radish)

Name status

Accepted

How to grow

Cultivation

Grow in full light or light shade, ideally in light, rich, near-neutral, and moist but well-drained soil; sow seed at frequent intervals from early spring to late summer, so that there is a succession of crops; sow in rows 15cm apart, at a depth of 1-2cm, and sow at or thin to a spacing of about 3 cm apart, and harvest them when young so that they do not become woody; for more advice, see radish cultivation

Propagation

Propagate by seed sown 1-2cm deep, from early spring to late summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • City and courtyard gardens
  • Flower borders and beds
Pruning

No pruning required

Pests

May be susceptible to flea beetles, slugs and snails and cabbage root fly

Diseases

Radishes may be affected by brassica downy mildew, and by brassica white blister, club root, damping off, fungal leaf spot, and virus diseases

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