Will No Mow Lawn Grow Under Black Walnut trees?
In many cases, No Mow will grow under Black Walnut trees. However, the leaves and nuts must be removed in fall to prevent damage by high levels of the plant toxin produced by walnuts called Juglone. Black walnuts, like oaks and hickories, cast moderate shade at the ground level, creating ideal growing conditions for the shade-tolerant fine fescue grasses.
In a setting with well-drained soil, No Mow can succeed under Black Walnut trees. The image below shows No Mow thriving under Black Walnut trees, in dry sandy soil with rapid drainage. However, if soil is consistently damp, has slow drainage, or if there is significant clay content, then planting No Mow under the Black Walnuts is not recommended.