Abundant flowering of plants in spring does not always end with a good harvest. what reasons can cause

Abundant flowering of plants in spring does not always end with a good harvest. what reasons can cause such a phenomenon

The flowering of plants has an important role to play. During this, pollination of the pistils with pollen occurs and the formation of fruits after that. Most flowering plants are pollinated by insects. Also, some species are wind-pollinated, and some plants are capable of self-pollination. If flowering begins in early spring, but the air temperature and weather conditions are bad for insects, then pollination practically does not occur. There is simply no one to pollinate the flowers. Therefore, there is a bad harvest.