My outdoor ruber tree (Florida) has streaks on the leaves. Looks like bar codes. What is causing this discoloration?
Certified GKH Gardening Expert
This is a fungal infection. This can, usually, be treated with dolomitic lime and wettable sulfur. This article will help you with the care of these plants: https://www.gardeningknowhow.com/houseplants/rubber-tree/rubber-plant-outdoors.htm