This is on the stems of the plant and is killing it… I\’d like to know what it is and how to treat it if possible. . Than you.
Light tan color and killing the plant slowly.
Certified GKH Gardening Expert
That is one of many hard-to-pin-down fungal infections! You will need to remove infected growth and treat with a fungicide. This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm