Cherry is a tree species that is more sensitive to temperature. When the average daily temperature reaches about 1O℃, flower buds begin to sprout (from the end of March to early April in Yantai, Shandong, and in mid-to-late March in Tai'an). Flowering begins when the daily average temperature reaches about 15°C (mid-April to early late April in Yantai, Shandong, late March to early April in Tai'an, and about late April in Dalian, Liaoning). The flowering period is 7 to 14 days and lasts 20 days, depending on the variety. The difference is 5d. Chinese cherries are about 25 days earlier than sweet cherries. They are often damaged by late frosts during the flowering period, and in severe cases, they will stop producing. Therefore, during the flowering period, you should pay close attention to weather changes, listen to and watch weather forecasts, and take necessary anti-frost measures to reduce damage.

The self-flowering ability of different cherry species varies greatly. Chinese cherries and sour cherries have a very high self-pollination seeding rate. In production, whether under the conditions of open field cultivation or protected field cultivation, special configuration of pollination varieties and artificial pollination are not required, and high yields can still be achieved. Most varieties of sweet cherries are obviously autoflowering. If a variety is planted alone or several varieties with incompatible pollen are planted together, they will often only bloom but not produce fruit, causing huge losses to the cultivators. Therefore, when establishing a sweet cherry orchard, special attention should be paid to matching pollinating varieties with affinity, and bees or artificial pollination should be carried out during the flowering period.