Brassica rapa (Rapifera Group) 'Oasis'

RHS Plant Profile
turnip 'Oasis'
Award of Garden Merit
Annual Biennial

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.

Position

Full sun

Soil Types

Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Clay Loam
Moisture
Moist but well–drained or Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Brassicaceae
Native to GB/Ireland
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 turnip 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