Weeping willow, six years old and 9″ diameter. Wet, clay ground and thriving. Late last summer, I noticed the leaves were dead suddenly, and the bark on the trunk was completely loose and falling off.

is said to have willow blight. Black canker causes dark lesions on leaves and sunken black spots where leaf twigs join stems.

Although when growing in bare areas with few other plants around willow weed will scramble along the ground, it can also grow upright under some conditions such as within crops, becoming competitive ...