What spring phenomena are observed in plant life?

In spring, the sun shines brighter and the length of the day is much longer than in autumn and winter. Plants notice the change in daylight hours and begin to germinate. Snowdrops are the first to be seen, after which other flowers begin to rise. Green grass begins to sprout, the first buds form on the trees. The sap begins to actively move into the birch trees. After that, the first small leaves form on the trees, which gradually completely cover the tree. Even more flowers begin to bloom, these are already flowers of honey plants, to which bees rush to collect pollen.