The leaves turn yellow and drop off mostly in the middle of the branch, while leaves at end of branch and the base tend to stay green. I do not see any signs of insects or mold, etc. We had an unusually wet summer in OK and then the rain stopped, and it returned to hot. Also, my tree is about 100 ft from my septic tanks (they are fiber glass). Do you think the root system will interfere with my system?
Golden Willow (5 Yrs Old) With Yellow Leaves
Certified GKH Gardening Expert
This could be the effect of the heavy rainfall. Yellowing leaves is generally an indication of a watering issue. To much or to little.
Golden Willow trees are fast growing and unlike some other Willow varieties are attacked by insects and disease. In the Willow cultivators it is not a long lived tree.
If the the soil isn't draining well, this will keep the moisture levels high and cause the yellowing leaves.
My research shows that this tree does have issues with it's roots invading pipes and sewer lines.
It's roots can spread 3 times the tree canopy.