Not the plant you're looking for? Search over 300,000 plants
Annual Biennial

Brassica oleracea (Italica Group) 'Belstar'
  • RHS AGM

calabrese 'Belstar'

A biennial grown as an annual vegetable. A cultivar producing a stout rosette of triangular, lobed, grey-green basal leaves and short, sturdy stalks bearing densely packed, edible heads of crisp, blue-green florets. It has an excellent flavour and remains in good condition for a long time. Successional sowing will provide a harvest throughout Summer and Autumn

Buy this plant
Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained, Moist but well–drained
pH
Neutral, Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green Green
Autumn Blue Green 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, well compacted, non-acid soil in full sun. Sow thinly between April-June at a depth of 1cm in rows 30cm apart and thin seedlings to 10cm apart when large enough to handle. Can be sown indoors in a seed tray of good quality seed compost and covered with 6mm of vermiculite, maintain at 15 degrees until germination then prick out into individual cells. See calabrese cultivation for more detailed advice

Propagation

Propagate by seed. See sowing vegetable seeds or sowing seeds indoors for further advice

Suggested planting locations and garden types
Pruning

No pruning required

Pests

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

Diseases

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

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.