Originated in the coastal area of China, it evolved from Portulaca oleracea L. Since the 9th century, it has gradually become one of the important vegetables in Europe and North America, and has been widely planted in Britain, Germany, France and other countries.
There is a small area of cultivation in Taiwan Province Province, China. Brussels sprouts have narrow leaves, long petioles, spatulate leaves and wrinkles. The stem is erect, the terminal buds are spread out, and axillary buds can form many lobular balls. There are two kinds of varieties: high and low. The height of dwarf seed stem is about 50cm, which is too early; The stem of the tallest one is more than 100cm, which can be divided into big Brussels sprouts and small Brussels sprouts according to the size of the leaf bulb. The diameter of the lobular ball of Brussels sprouts is more than 4 cm; The diameter of Brussels sprouts is less than 4cm and the quality is good. Brussels sprouts like cold climate and have strong cold tolerance.
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