Choy sum growing leaf plant of the species Brassica rapa the Chinensis group also known as Choi sum, Choy sum annual but can be perennial plant, grow in temperate, cold mediterranean or cold subtropical climate and growing in hardiness zone 2-10.

Leaves green ovate shape grow on 5-10 cm stem

Choy sum buds

Buds and flowers edible the color yellow, the flowers small grows on inflorescence

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Requirements for Choy sum growing and care:

Cold weather or else become bitter, slightly acid, heavy soil

What is the best way to start growing?
Plant / Seedling / Seed

Is it necessary to use vegetative reproduction?

Difficulties or problems when growing:
In warm climate the leaves become bitter

Planting season:
Autumn – winter – frost free area / Autumn, winter, spring – temperate climate

Pests and diseases:
Pieris (butterfly), prodenia (Spodoptera), slugs, aphids

Pruning season:
All season

How to prune:
Dead or infected leaves

Size of the plant?
20-40 cm, 8-16 inches

Growth speed in optimal condition:
Fast growing

Water requirement:
Average amount of water / Big amount of water

Light conditions in optimal condition for growing:
Cold climate Full Sun /warmer climate Half Shade

Is it possible to grow as houseplant?

Growing is also possible in a planter /flowerpot / containers:

Blooming information

Bloom season:
Spring / Summer

General information about the flower
Yellow flowers the flowers small grow on inflorescence

Thinning the bloom:
Possible to thinning but the flower and the stem also edible

Pollination is done by:
Bees, self-pollination

Edible leaves

Leaves harvesting season
In cold area winter-spring-summer in frost free autumn-winter-spring

How to harvest the leaves?
Two possibilities to trim the leaf separate or trim all the leaves of the plant in the same time

Information about leaves:
Green leaves ovate shape grow on 5-10 cm stem

Uses of Choy sum leaves:
Salad, eat raw, cooked, stir fry, staffed

Scientific name:

Brassica rapa var. parachinensis

Blooming Seasons

Edible Parts

Culinary Uses

Flower Colors


Harvest season

Plant growing speed

Plant life-form

Plant uses

Planting season

Plants sun exposure

Watering plants

Hardiness zone