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A picture of a Flowering Chinese Cabbage

Flowering Chinese Cabbage

Brassica rapa var. parachinensis

Also known as

Pak Choy Sum, Flowering Pak Choy

Partial Shade
Moderate care
Frequent watering


USDA zone


Minimum temperature

Expected size









  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

Flowering Chinese Cabbage Overview

The leaves are tender like lettuce even though it is a cabbage. Unlike regular cabbage, the thick veins in the leaves are actually sweet and tender. This cool-season crop combines the flavor of cabbage and the texture of romaine lettuce.

Common problems with Flowering Chinese Cabbage

Cabbage aphids, cabbage root maggot, cabbageworms , flea Beetles and cutworms may affect cabbages. Control by keeping beds weed free and handpick worms. Avoid wetting foliage if possible to stop Alternaria disease.

    How to harvest Flowering Chinese Cabbage

    Choy sum is harvested 30 to 50 days after sowing. Plants are harvested as the first flower buds begin to open by cutting with a sharp knife at the base and tying 10 to 12 plants together. A high quality product has a white and tender stalk with developed flowers.

    How to propagate Flowering Chinese Cabbage


    Sowing time best in spring or autumn with a spacing of 2.5-20 cm. Don’t plant your cabbage too late or the plants send up flower stalks (bolting) before making heads in the heat.

    Special features of Flowering Chinese Cabbage

    Crop rotation

    Alternate with legumes, light feeders like spinach or other vegetable groups like rootcrops.

    Other uses of Flowering Chinese Cabbage



    Flowering shoots and younger leaves of choy sum are used in salads or stir-fried, lightly boiled or steamed and added to meat.