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Chinese Cabbage Tsoi Sim Choy Sum - Brassica rapa
Il s'agit de plants que j'ai reçus, je ne sais pas comment on peut les manger. Est-ce qu'on mange les grosses feuilles du bas ? Comment doit-on préparer les fleurs ? Merci.
ginette, 21/06/2018
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The Chinese Cabbage Tsoi Sim Choy Sum is an exotic leafy vegetable, similar to Chinese cabbage and pak choi. Both the stems and flowers are consumed, and they have a delicate taste, similar to asparagus. It can be eaten raw or cooked, but it's best when cooked briefly. Sow under heated shelter from March to May or directly in the ground from May to August for a harvest from July to September.
Chinese cabbages are vegetable plants native to China and, more generally, to East Asia. They belong, like their European counterparts, to the large Brassicaceae family and are known by the species name Brassica rapa.
These cabbages, which were once only found in certain specialized shops, are gradually gaining popularity in our markets and gardens, much to the delight of Asian cuisine enthusiasts.
They are biennial plants grown as annuals and are full of qualities, both in terms of taste and nutrition. From a dietary point of view, they are remarkable: low in calories, they are rich in vitamins C, A, and potassium, and also contain a lot of fiber and minerals such as calcium.
In cooking, these cabbages can be eaten raw or cooked: in salads, quickly stir-fried in a wok, in soups, or gratins.
In the vegetable garden, growing Tsoi Sim Choy Sum is slightly more delicate than growing traditional cabbages because it requires more warmth, but it has the same requirements: deep soil, excellent fertilization, and regular moisture. It should be planted in a sunny spot. Chinese cabbages are not very hardy and can only be grown in late summer and early winter.
Harvest: Tsai-Shim flowering cabbage can be harvested from July to September as needed, by cutting at the collar level.
Storage: It can be stored in the refrigerator for a few days.
Gardener's tip: To limit watering, we recommend mulching the soil with thin layers of grass clippings, preferably mixed with dead leaves, once the plants are well established. This protective layer helps keep the soil moist and also reduces weed growth.
Harvest
Plant habit
Foliage
Botanical data
Sowing:
The germination temperature of the Tsoi-Shim Cabbage is around 14° and takes about 14 days.
Sowing period: under heated shelter from March to May or directly in the ground from May to August
Harvest period: from July to September
You can sow the seeds directly in place or prepare young plants that will later be transplanted to their final position in the garden.
Preparing young plants: Under shelter or in a nursery in the garden for the rest of the year (according to the recommended sowing period), sow the seeds at a depth of 1 to 2 cm (0.5 to 1in) in good seed compost or fine soil. Cover lightly with compost and remember to keep the substrate moist but not waterlogged.
When the young plants appear strong enough to handle, transplant them into buckets if necessary before planting them in the garden, when there is no longer any risk of frost. During planting, respect the recommended spacing for direct sowing.
Direct sowing: In properly amended and finely worked soil, create furrows about one or two centimeters deep, spaced 30 cm (12 inches) apart. Sow the seeds and cover them with a thin layer of fine soil. When the seedlings are well developed, thin them out, leaving one plant every 30 cm (12 inches).
Cultivation:
Tsai-Shim Choy Sum should be grown in the sun. It is a demanding vegetable that requires well-rotted, nitrogen-rich and potassium-rich soil. It is advisable to apply a generous amount of mature compost (about 3/4 kg per m2) in autumn, by scratching it into the soil to a depth of 5 cm (2in), after loosening the soil as is done for all vegetable crops. It is not very tolerant of soil pH, which should be between 5.6 and 6.5. In acidic soil, it will be necessary to gradually raise the pH by adding calcium in the form of Dolomite or Lime.
Beware of pests such as the Cabbage White Butterfly or Flea Beetles and consider installing insect-proof netting.
Seedlings
Care
Intended location
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.