The best choice for cultivating dahlia is loose and well drained sandy loam, and try not to use heavy clay soil. It can be mixed with saprophytic soil, sandy soil and vegetable garden soil.
It should be cultured in a place with plenty of light. The best time of light is more than 6 hours. This can make it grow better and the flowers will be fuller. If the sun is not enough, the growth of leaves and flowers will be affected.
In the growth period, the water quantity should be increased. When the temperature is high, water once a day. You can also spray water around to increase the air humidity. Don't be too dry or wet. Generally in the growth period to increase water, in the seedling period to reduce water, so as not to cause dwarfing.
In the growth period of Dahlia temperature requirements are not strict, generally the temperature control in 5-35 ℃ can be normal growth, the most appropriate growth temperature is 10-25 ℃, if you want to make it grow better, try to control to the most appropriate temperature.
Fertilizer should be applied every 10-15 days from the seedling stage, and once a week after the flower bud appears. When the temperature is high, it is better not to apply fertilizer. The amount of fertilizer should be determined according to its growth. The lighter color of the leaves is mostly lack of fertilizer. If the leaves are yellow and scorched, it is excessive fertilization. The leaves are green and thick, which is a sign of proper fertilization.
