1. Temperature: greens are cold-resistant, preferring low-temperature environments, 10~20 are able to grow normally. Green vegetable seeds can also germinate and grow at the lowest temperature of 5, if kept at 20~25, three or two days will be able to germinate.2. Water: greens need a lot of water from seed germination to flowering and fruiting at all stages. Its leaves are thick and water evaporates easily, so it is important to keep the soil moist to prevent it from drying out.3. Soil: It has a well-developed root system with many fine roots, so deeper soil is its favorite. The soil should preferably be weakly acidic or neutral, and it should be loose and airy, which can make the bok choy grow better.4. Pot: It is best to plant bok choy in clay pots with a height of more than 20cm, which can make the bok choy roots grow better. Clay pots with good ventilation and permeability can also make it grow better

2. Breeding tips

1. Sowing: Before sowing, the seeds of bok choy need to be dried in the sun for three to four hours. Then, soak them in warm water at 50 degrees for half an hour, then soak them in cold water at 25 degrees for three hours, and finally sow them at 20 degrees until they germinate.2. Summer: it is a plant that prefers low temperatures, so high temperatures in the summer are likely to result in poor quality of bok choy. The temperature should be lowered to below 30 as much as possible, and keep the soil moisture sufficient

Three, problem diagnosis and treatment

1. Downy mildew: Downy mildew can occur throughout the development of greens, which can kill the leaves and affect the whole plant, so you need to spray phosphorus ethylaluminum in time to prevent and control it.2. Botrytis: Botrytis is mainly harmful to the stems of greens, and when it is serious, it will make the onset of the part of the disease rot. Generally in the flowering period when the onset of the disease, should be timely sprayed 1 to 2 times the fungal nucleosis bacteria, and timely treatment of diseased plants

Four, other issues

1. poisonous or not: brussels sprouts is a common vegetable on the market, natural non-toxic, easy to cultivate. 2. how long to harvest: if it is the fall planting of the brussels sprouts, two months can be harvested. If it is spring planted brussels sprouts, it takes three to four months to harvest.