What are the ecological habits of tulips?

Tulip grows in the environment of dry heat in summer and cold in winter, and becomes a perennial plant that blooms in spring and sleeps in summer. Extremely cold-resistant, can resist the low temperature of -35℃ in winter, and can also grow in the area with the lowest temperature of 8℃ in winter, with strong adaptability. Almost all flowers bloom on sunny days and close at night on cloudy days. 1 flowers can only bloom for 5 ~ 6 days. If the weather is cold and humid, it can be extended to 10 ~ 14 days. When the flower fades, six petals fall off and the pistil develops into a capsule; When mature, the top is cracked and there are 200 ~ 300 flat seeds in it, but many cultivated varieties are not strong. With the arrival of hot weather, the aerial part of tulip began to wither, and gradually developed into 1 ~ 2 new flowering bulbs and 2 ~ 4 or 6 ~ 7 reproductive bulbs at the base of old withered bulbs. The number of bulbs varies from variety to variety. Subsequently, the underground bulb seems to be dormant, but in fact, the stem, leaf and flower bud are differentiating inside the bulb.