My weeping willow tree is about five years old and is pretty much established and looks beautiful. The last couple of weeks there

Question

have been lots of yellowing leaves falling on my lawn. Any suggestions on what is going on and how to prevent and stop this. Tha nk you.

Answer 1

Yellow leaves can indicate watering issues; too much or too little, disease or pests.
Do an examination of the bark, leaves and tree overall.

Stress & Chlorosis. A weeping willow’s leaves may yellow and drop as a result of stress brought on by drought or the lack of regular watering. … Chlorosis may also be a nutritional problem—a lack of trace elements, especially iron—due to poor drainage or compacted soil from foot traffic or construction.
I suspect your tree needs water but check it’s overall health!
Balanced Fertilizer. A balanced fertilizer with an equal ratio of nitrogen, phosphorus and potassium, such as a 20-20-20 formula, is appropriate for a weeping willow. The nitrogen supports foliage growth on the tree’s long, weeping branches, while the phosphorus supports the growth of roots, stems and flowers.