willow tree planted near lilacs

Question

Will the willow steal water?

Answer 1

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:
https://www.gardeningknowhow.com/ornamental/trees/willow/grow-a-willow-tree.htm