Choy sum

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Choy sum (Cantonese)
Cai xin (Mandarin)
Choi Sum stalks.JPG
Choy sum plants, growing on a farm
Species Brassica rapa var. parachinensis
Cultivar group Chinensis, Pekinensis groups
Origin China, before the 15th century
Cultivar group membersMany; see text.
0.5 to 1 centimetre (14 to 12 inch) in diameter and 15 to 20 cm (6 to 8 in) tall with light to dark green, and are oval (becomes acuminate shaped, or basal-shaped near the flowering stage) with slightly serrated margins leaves, which never forms compact heads like the cabbage. Fruits can develop out of cross-pollination or self-pollination, and are silique structured, that open at maturity through dehiscence or drying to bare open to brown or black seeds that are small and round in shape. A single pod can bear 4 to 46 seeds.

The height of the plant varies greatly, ranging from 10 to 40 cm (4 to 16 in) depending on the growing conditions and the variety. Flowering usually appears when there are about 7 to 8 leaves on the plant or about 20 cm (8 in) tall. The bulk of the root system is found within a depth of 12 cm (4+12 in) and is confined to a radius of 12 cm (4+12 in). [2] [3]

The whole plant is overall an annual, herbaceous plant, rarely perennial, rarely growing into subshrubs. The whole plant consists of a simple or branched (when it is near the flowering stage), leafy structure. It grows best in soil with a minimum pH level of 5.6, maximum pH level of 7.5. [4]

See also

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References

  1. "CHOY SUM | South Pacific Seeds". Archived from the original on 2013-02-08. Retrieved 2013-04-18.
  2. Resources, Department of Economic Development, Jobs, Transport and (2017-05-22). "Agriculture". www.dpi.vic.gov.au.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. "CQUniversity Australia - Chinese Flowering Cabbage". Archived from the original on 2013-02-26. Retrieved 2013-02-17.
  4. "Brassica chinensis var. Parachinensis (Choy Sum)". zipcodezoo.com. Archived from the original on 12 April 2013. Retrieved 22 May 2022.
Choy sum (cai xin)
Chinese 菜心
Hanyu Pinyin càixīn
Jyutping coi3sam1