Question
Jasmine plant growing in a desert climate (Las Vegas)
This spring some leaves show a reddish circular blotch on some leaves. Otherwise ok.

Answer
Joe:
Difficult to say w/o seeing some of these leaves since many things can cause spots. Can you send me a closeup photo of these blotches?  I might be able to give you an idea. You can also contact your local county Extension office about bringing in 5-6 leaves for them to examine.

If there are just a few leaves affected, you can always remove them and see what happens.

Regards
Steve