Brassica oleracea (Acephala Group) 'Redbor'

RHS Plant Profile
borecole 'Redbor'

Other common names

curly kale 'Redbor'

Award of Garden Merit
Annual Biennial

A hardy annual vegetable grown for its intensely curly, rich purple coloured leaves and excellent flavour. It is extremely hardy and makes a great Winter crop when the kitchen garden is often scarce. Harvest when the leaves are still young and tender. Shows good resistance to pests and diseases

Position

Full sun

Soil Types

Sand, Loam

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Sand Loam
Moisture
Well–drained
pH
Neutral or Alkaline

Position

Full sun
Aspect
West–facing or South–facing
Exposure
Sheltered
Hardiness
H5

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 indoors in mid-Spring and prick out to modules or individual pots, transplant out in early Summer between May-July in rows 60cm apart. Keep well watered and cover with netting to protect from birds and insects. 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. Remove yellowing leaves

Pests

May be susceptible to birds, cabbage whitefly, cabbage gall weevil, cabbage caterpillar, cutworms, slugs and snails, swede midge, mealy cabbage aphid, flea beetle

Diseases

Shows good disease tolerance but may be suscpetible to black root, downy mildew, foot and root rot, grey mould, leaf spot, white blister