Question

why does a bare tree grow new leaves in spring ​

Answer 1

Trees and bushes that lost their leaves over the winter begin to grow new leaves again and also flower in spring. This happens because the temperature of the air and soil starts to warm up and the hours of daylight increase as the days get longer with the coming of spring.

Answer 2

In winter we have colder weather, sometimes snow and frost, the trees have no leaves and the amount of time it is light during the day is at its shortest. In spring the weather usually turns warmer, trees begin to grow their leaves, plants start to flower and young animals such as chicks and lambs are born.