How many days does the cabbage grow from seed to maturity? Chinese cabbage is a biennial plant, but in early spring, it can also flower and seed in the same year. The growth and development cycle of Chinese cabbage can be divided into two stages: vegetative growth and reproductive growth. In particular, there are several cycles. 1, germination period is from seed germination to true leaf exposure, that is, "breaking heart" is the germination stage. It takes 5~7 days under suitable conditions. During the germination stage, nutrition is mainly stored in the seed cotyledons, and the cotyledons develop and assimilate and produce little nutrients. 2, the seedling stage reveals from the true leaves to seventh to nine leaves, that is, the formation of the first leaf ring. This stage is the seedling stage. The critical feature at the end of this period is the disc shape of leaf clusters, commonly known as "Tuan". Under suitable conditions, it takes about 16~20 days. 3. During the rosette stage, from the cluster tree to the twenty-third to 25 lotus leaf, all the leaves developed and expanded rapidly, forming the main assimilating organs. The critical feature at the end of this period is the clasp growth of the central leaves of leaf clusters, commonly known as "roll centers". In this period, there are 3 leaf rings formed at the seedling stage. Under suitable temperature conditions, it takes about 15~20 days for early maturing varieties and 25~28 days for late maturing varieties; the plant seedling end is gradually transformed into reproduction, and the differentiation of leaf and leaf is stopped successively. 4. The period of heading is from the heart leaf to the bulb of the leaf. This period can be divided into three stages: the first, the middle and the back. In the early stage of the ball formation: the leaves of the rosette continue to expand, and the outer sphere leaves grow rapidly, forming the outline of the leaf ball first. It is called the "draw cylinder" or "pull the box". This period is about 10~15 days. In the middle of the ball: after the plant is sucked out, the inner layer leaves grow rapidly to enrich the inside of the leaf bulb, which is called "filling the heart". This period is about 15~25 days. Late stage of heading: leaf ball continues to grow slowly to harvest for about 10~15 days. During the heading stage, plant growth was the largest, accounting for about 70% of the total plant growth. The length of catching period varied with varieties. The early maturing varieties were 25~30 days and the middle late maturing varieties were 25~50 days. 5. Bolting from the beginning stage of bolting to the beginning flower is the bolting stage. This period is the period of new root formation and flower bud differentiation and growth. It takes about 15 days. 6. Flowering and fruiting stage begins from flowering to fruit, and seed ripening is flowering and fruiting stage. The flower branches are constantly sucking, and the stem leaves are constantly on display, buds are constantly growing and flowering and strong. Later fruit ripening, stem leaves gradually falling off, and finally the whole plant withered.