Q.Weeping Willow
Hi we bought a semi mature weeping willow 2016,it’s been fine up until now,it appears to be dropping leaves early,there are some brown dark spots on leaves with some dying back. I have attached 4 photos Many thanks in anticipation Liz Green

Certified GKH Gardening Expert
Willow roots are known for seeking out water pipes for the moisture. They can upend sidewalks and need a large area to grow. They are best suited for parks near water.
Is your tree getting plenty of water? Cut out the stems that have died back and check your cultural conditions with those below:
https://www.gardeningknowhow.com/ornamental/trees/willow/planting-weeping-willow-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/willow/weeping-willow-pruning.htm