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Jun 22, High temperatures can result in heat stress for your trees. This causes leaves to turn yellow and then drop, as trees are water-stressed and cannot provide or maintain the energy needs of their leaves.

Because weeping willow roots aggressively seek water, the tree should be planted a minimum of feet from water lines, sewer lines and septic system drain fields.

Early identification and treatment of heat stress go a long way toward helping them treecut.barted Reading Time: 8 mins. Jun 02, Question: Weeping willow, six years old and 9" diameter. Wet, clay ground and thriving. Suddenly late last summer, I noticed the leaves were dead, and the bark on the trunk was completely loose and falling off.

Leaf chlorosis is the result of mineral deficiencies, such as nitrogen, iron, or magnesium.

No other trees or shrubs willow tree leaves turning yellow and falling off 50 feet (black walnut, sycamore, maple, rose of sharon) were affected. No obvious sign of [ ]Estimated Reading Time: 2 mins.

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.