My plum tree is four years old. In March 2017, the tree was full of blossoms. Thanks to the hard-working bees, we had a prolific harvest in the early summer. I took photos of the plum tree in March this year, the blossoms were scattered. I was puzzling about the difference between the two years. Then I remembered that the rain came late this past winter. The air was still cold in February and early March. As a result, there was not enough sunlight to call out the blossoms. Only after the rain and a couple weeks of warm weather, the blossoms started to appear. The harvest this year may not be as bountiful as last year.