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Annual Biennial

Brassica rapa (Rapifera Group) 'Oasis'
  • RHS AGM

turnip 'Oasis'

An annual vegetable grown for its edible taproot. A small, uniform turnip variety with a pure-ivory root which can be harvested at any size for its sweet, juicy flavour similar to a melon between late Summer and Autumn. Shows good disease resistance. Suitable for growing in containers. It has a delicious flavour and can be eaten raw like an apple or grated into salads.

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

South–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Brassicaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Brassicas can be annual, biennial or perennial plants, most are upright with alternate, often glaucous leaves, long taproots and clusters of cross-shaped, yellow or white flowers. The genus includes a number of species bred to produce food crops, such as cabbages, turnips, mustards and oilseed rape, as well as others grown for their ornamental value

Name status

Accepted

How to grow

Cultivation

Grow in fertile, moist but well drained soil in full sun. Sow seeds from April to July at 4 weekly intervals for a successive crop. Sow thinly at 1cm deep in drills 30cm apart. Thin seedlings when large enough to handle to 15cm apart. Suitable for container growing. See Vegetable Cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
  • Patio and container plants
Pruning

No pruning required

Pests

May be susceptible to birds, cabbage caterpillars, cabbage root fly, flea beetle, slugs and snails

Diseases

May be susceptible to black rot, club root, downy mildew, grey mould, leaf spot

Get involved

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