Fruit trees referred to as "flowering" are typically ornamental varieties grown for their spring blossoms and not for their fruit, which are often inedible. Popular ornamental cherry trees are the Japanese flowering cherry trees , Yoshino cherry trees and weeping Higan cherry trees. Overwatering a flowering cherry tree can lead to root rot, which can cause its leaves to brown, wilt and the tree to eventually die from overwatering. It may take a few tries to find out exactly how much to water your flowering cherry tree without overwatering it.
Test the soil 3 inches beneath the soil line before watering. Dig a small hole with a trowel or use a soil moisture meter. If the soil is dry to the touch or reads as dry on the moisture meter, it's time to water a flowering cherry tree.
Set the nozzle end of a hose about 1 to 2 inches from the trunk of the tree. If you have a soaker hose, strategically place it under the entire canopy of the tree to water all the roots. Avoid using a sprinkler since a lot of the water will be wasted.
Turn the hose on a slow trickle. Leave it on for 30 minutes to an hour. If the water is puddling on top the soil, you are watering it too fast for the soil to absorb the water. Turn down the water pressure.
Check the soil under the tree after you are done watering it. If it is soggy or has standing water, then you watered it too much. Next time, decrease the amount of time by 10 to 15 minutes and turn down the water pressure to see if that prevents overwatering.
Test the soil moisture again in three to seven days. If the soil is dry sooner than this, increase watering time by 10 to 15 minutes so you don't have to water as frequently. Add 2 to 3 inches of mulch under the canopy of your cherry tree to help preserve water.