Choy sum grow and care – 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
Buds and flowers edible the color yellow, the flowers small grows on inflorescence
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?
No
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 indoor as houseplant?
No
Growing is also possible in a planter /flowerpot / containers:
Yes
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
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
Brassica rapa var. parachinensis
Planting Season: Autumn Planting, Spring Planting, Winter planting
Light exposure requirements: Full sun Plants, Part shade Plants
Climates that the plant can grow: Mediterranean Climate, Subtropics Climate, Temperate Climate
Growing speed of the plant: Fast growing plants
Plant life-form: Annual plant, Leaf plant
Plant Uses: Colored leaves, Edible plants
Requirements for watering the plant: Big amount of water, Regularly water
Hardiness zones: Hardiness zone 10, Hardiness zone 2, Hardiness zone 3, Hardiness zone 4, Hardiness zone 6, Hardiness zone 7, Hardiness zone 8, Hardiness zone 9
Ornamental parts:
Leaf color:
Blooming season: Spring flowers, Summer flowers
Flower colors: Yellow flower
Harvest Season: Autumn Harvest, Spring Harvest, Summer Harvest, Winter harvest
Edible Parts: Edible Bud, Edible flowers, Edible leaves
Culinary uses: Cooked, Eaten raw, Leafy vegetables, Salad, Stuffed or Wrapped