It is suitable for planting in the sandy loam with good drainage, loose, air permeability and fertility.
The suitable temperature for the growth of Coreopsis is between 10 ℃ and 30 ℃. Only by keeping the suitable temperature can Coreopsis continue to grow and bloom. In terms of light, blackheart chrysanthemum likes sunny environment. During its growth, it needs sufficient light to grow vigorously and flowers bloom brightly. In summer, there is strong light, and the temperature is too high. Therefore, it is necessary to shade the black heart chrysanthemum properly and take cooling measures, such as spraying water. In winter, the temperature is low and the sun is little. In order to make the black heart chrysanthemum grow continuously, it is necessary to put the black heart chrysanthemum in a sunny place indoors for maintenance, and pay attention to heat preservation.
The requirement for fertilizer and water is not high. Generally, water should follow the principle of "see the dry and see the wet". In the growth period, the water demand of the black heart chrysanthemum is large, so it needs to be watered properly. In the flower bud period, it needs to keep the pot soil moist, and it needs to be watered fully, which can be watered in the morning or evening. When the black heart chrysanthemum is blooming, it needs to control the watering to prevent the plant from lodging. In terms of fertilizer application, in addition to adding base fertilizer properly during planting, it is generally necessary to apply fertilizer properly when the growth is in good condition to supplement the missing nitrogen, phosphorus and potassium elements, so as to ensure sufficient nutrients; in the flowering period of Coreopsis, the application amount of phosphorus and potassium fertilizer should be increased to make the flowers blooming.
The propagation of Coreopsis is mainly in ramets, and it can also be seeded in spring and autumn. In addition, tissue culture and Cuttage Propagation are also used.
In the growth process of Coreopsis, pruning should be done frequently. During the growth period of the plant, the heart should be removed in time to promote the branching and make it bloom more; when the leaves are too dense, the old leaves and diseased leaves should be cut off in time to make the plant type beautiful, improve the lighting and ventilation conditions, and reduce the occurrence of diseases and insect pests.
In the process of cultivation, we should pay attention to the possibility of root rot or leaf spot, and timely control of diseases and insect pests.
