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A picture of a Kohlrabi 'Purple Vienna'

Kohlrabi 'Purple Vienna'

Brassica oleracea (Gongylodes Group) 'Purple Vienna'

Also known as

Kohlrabi 'Red Vienna'

Full Sun
Easy care
Moderate watering
Frost Hardy

H4

RHS hardiness

-10°C

Minimum temperature

Expected size

Height
Spread

40cm

Max

40cm

20cm

Min

20cm

6 months to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has a mild fragrance

Kohlrabi 'Purple Vienna' Overview

Kohlrabi 'Purple Vienna' is an easy to grow purple-skinned heirloom variety with white flesh.

Common problems with Kohlrabi 'Purple Vienna'

Cabbage worms and cabbage loopers can be kept at bay with collars around the stems. Birds can also damage young plants - netting crops to protect young plants.

Kohlrabi 'Purple Vienna' Companion Plants

Beetroot, cucumber, mint, onion, oregano, sage, chives and thyme

How to harvest Kohlrabi 'Purple Vienna'

Harvest when young (within 8 - 10 weeks) from Summer through until late Autumn. Cut from the base of the plant and remove the swollen stem. Cut the leafy tops off and discard them. Two distinct fibrous layers surround the stems. These are peeled away, revealing the more palatable inner heart that can be eaten raw or cooked. The leaves can also be harvested and eaten like collard greens and kale. To collect seeds, leave a plant to overwinter and produce a flower stem in its second year.

How to propagate Kohlrabi 'Purple Vienna'

Seed

Direct sow 1cm (0.5") deep, in rows 30cm (12") apart. Thin seedlings when the first true leaves appear or they are 2.5cm (1"). In cooler areas, seeds can be sown into modules undercover and planted out once the ground has warmed up. Space plants 15cm (6") apart. Make sowings every 3 weeks throughout the growing seasons to ensure a continuous crop.

Special features of Kohlrabi 'Purple Vienna'

Crop rotation

Crop in different locations each year to help prevent the build-up of P&D's Grow with other Brassicas the year after legumes and follow with potatoes.

Other uses of Kohlrabi 'Purple Vienna'

Culinary

Edible

Stems and leaves are edible and often used