You can't directly bask in the sun, because flowers lose water easily without roots, which leads to the withering of flowers and greatly shortens the flowering period.

Carnations should be kept in shallow water, about 3-5 cm, and roses and pink sunflowers should be kept in deep water, about 10- 15CM, and the water should be changed once a day. Every time the water is changed, the submerged part should be reduced to prevent rot.

Cultivation and preservation:

1 First, the roots of flowers should be cut obliquely, so that the water-absorbing part is large and more water can be absorbed;

2. Secondly, cut some off every day to ensure better absorption of water;

3. Also, don't soak the leaves of flowers in water, so the leaves will rot. Be sure to remove the leaves soaked in water.

4. Change the water every day. If it is summer, in order to keep the water temperature from rising, you can also put a few pieces of ice in the vase; At the same time, it is best to fill the vase with water, which will not only keep the temperature of the water longer, but also increase the weight of the bottom of the vase and ensure the stability of the vase.

In order to make the flowers bloom longer, you can also put a little beer in the vase, or grind two aspirin into powder and put it in. Can prolong the life of flowers.

Among several kinds of flowers that ordinary families often buy, tulips have the shortest life and carnations have the longest life. If your host wants to be beautiful and economical, you should buy less tulips and more carnations. Especially in summer, tulips will soon wither.

Baidu Encyclopedia: Flowers