Q.Purple Smoke Tree Leaves Are Turning Yellow
Purple smoke tree leaves are turning yellow with black spots before turning brown and falling off.
Certified GKH Gardening Expert
This looks bacterial. Usually, treating with a fungicide, keeping all infected growth cut and away from the area, and making sure that the top few inches of soil dry out thoroughly between waterings will help.
These articles will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/ornamental/trees/smoke-tree/smoke-trees-in-containers.htm
