willow tree planted near lilacs
Will the willow steal water?
Certified GKH Gardening Expert
How close are the lilacs planted near the willow tree? And how old is the willow tree, the more mature a willow tree the further the root system will reach out from the trunk. Generally speaking, any plantings over a willow's tree's expansive root system will probably compete for water and nutrients, possibly to their detriment. Shade-tolerant perennials and hardy ground covers are typically recommended to plant over a willow tree root zone.
For more information on willow trees, please visit the following link: