1、 Multiple opening

Dahlia is a bulbous flower of Compositae. Its flowering period is very long. As long as the environmental conditions permit, it can bloom many times. Generally speaking, in most of our domestic environments, it can open normally outdoors in May. It can't stop flowering until the early frost comes in November

2、 Ideal flowering temperature

In this process, if the temperature is too high in summer, dahlia will stagnate for a short time. Generally speaking, the ideal flowering temperature is about 20 degrees. The residual flowers should be trimmed off after each flowering failure. The leaf buds at the lower part of the flower can germinate new branches again. As long as the nutrients are sufficient, new flower buds can be pumped out. Therefore, it is in a state of non-stop flowering during this period of time, and the flowering period is generally relatively long