Spring is the season of recovery of all things, and also the season of sowing. In spring, corydalis can be seeded and propagated. Keep the temperature above 20 ℃, pay attention to moisturizing, and apply enough organic fertilizer as the base fertilizer. The growth rate of Corydalis mandshurica is very fast. If it is maintained normally, it is possible to bloom normally in the flowering period.
Corydalis can be changed in spring. After sowing and emergence, the seedlings can be transplanted in another basin, and the basin does not need to be changed again in the whole growth period.
Summer is not only the vigorous growth period of Corydalis, but also the main flowering period of corydalis.
Corydalis likes humid environment and soil, like high temperature and heat resistance. In fact, summer is very suitable for Corydalis growth. Summer is the main period of vigorous growth. The basin soil should not be cut dry and kept moist. It should be watered frequently. However, in summer, water should be kept away from the high temperature period at noon, and water should be sprayed to increase the air humidity.
In summer, fertilizer and water can be applied once or twice a month. Whether to apply fertilizer or not is decided according to the growth condition of flower bud before flowering.
Summer high temperature and rainy, the growth environment of Corydalis needs good ventilation, otherwise it is easy to cause root rot or diseases and insect pests. Before the end of summer, corydalis can be properly pruned to make it beautiful.
Autumn is also the vigorous growth period of Corydalis, and the flowering period of Corydalis can last until autumn. But in autumn, the weather is getting cool and the temperature is dropping. It's not the high temperature environment that Corydalis likes. When the outdoor temperature drops to about 12 ℃, it needs to be put into the room for maintenance.
In addition, in South China, corydalis is not suitable for sowing in spring, so it propagates in autumn.
Corydalis is not hardy. Corydalis likes the high temperature environment, and the low temperature in winter is not suitable for the normal growth of Corydalis, so the heat preservation in winter is an important work. The overwintering temperature of Corydalis should be above 15 ℃, and it can't suffer from cold and frost. Once frostbite, it may die. It's best to maintain in a warm room.
Summer pansy should not be watered too much in winter. Generally, the surface soil can be watered thoroughly when it is dry.
