Fruitless Mulberry leaves
20 foot Fruitless Mulberry has lush green leaves, but about 20% of newer growth leaves are curling and bright yellow only on the edges. I'm in Mojave desert and the tree is well watered. There does not appear to be spots or white powder. If it wasn't for the curl and yellow edges, the leaves are thick, green, lush. It's been very hot and very humid. Thanks for any help, it's much appreciated. movonup
This is likely Leaf Spot, a fungus.
Here is a link with more information.