I noticed white spots on many of my young magnolia's leaves. They look like mold (slightly fuzzy and round circles). I'll get a pic of it tomorrow, but for now, any ideas as to what it is and how to treat it?

Here's some pics

another

Hi You! Is it in part shade? I have some magnolia trees & some get spotty in the Fall but nothing fatal. Will follow here.

Hi there, Muddy! That tree is in full sun. No mature trees to provide shade around here!

I think you have a problem but I don't know what. Is your county extension office close & any good? If so, cut off an affected leaf & take it to them in a zip bag. See what they say.