Our tree is 4 years old and the last 2 springs it has only produced 15 to 20 blooms all on one side. There is a large root protruding out from the base that is 5 inches in diameter and extends out 3 feet at the tree base, is this the reason for poor blooming?
Weeping Cherry Tree
Certified GKH Gardening Expert
No, the reason for the lack of blooms will, more than likely, be due to poor soil nutrition. You should fertilize once each spring so that it will have what it needs to flower properly. This article will help with the care of these: https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/weeping-cherry-growing-tips.htm