I'm pretty sure it's something that the previous owners put there. I was thinking frog eye leaf spot. The tree is actually being supported with two stakes and some wire, so I would assume they put it in there! I actually just tore out a Chinese privet in the backyard, that thing was nasty!

Until weather pattern changes, may not be much point in seeking remedy. Like Dax reports, so-called "anthracnose", not really a specific disease but rather, a constellation of similar-appearing leaf blights-will run rampant on susceptible species. Not sure what you've got there for a plant-a little more context in terms of stems, overall plant view, etc. might help, but in any case, not worth worrying about. These things come and go all over the place all the time, rarely amounting to much. Keep in mind, plants are well-adapted to withstand occasional foliar disturbances. It's the diseases that plug up xylem and/or phloem that really cause trouble. This ain't that.

+oM

Yes, the new leaves really don't seem to be affected. I tried running one of those tree identifiers and came out with Green Ash, I'm pretty sure this isn't a green ash though, those things are never accurate. I emailed our local gardening show to see if they know too :) Thanks for the input!

It does look like ash to me though. How about white ash, fraxinus americana?

Looks very similar to white ash! More so than Green Ash I would say, hard to tell, so many varieties!

I was able to find this photo of a young white ash. The leaves look almost identical. I think this may be a winner huggorm.

It is very bushy for an ash though, no central leader. Was it cut down last year and now resprouting from the stump?

Nope, there was a single main twig sticking out of the rosemary bush with some side twigs, I'd say it's grown quite a bit this season, not so much in height, but became more bushy. Tree was about 4 feet tall when it started budding again. I guess i'll just let it be, I don't like how close it's planted to the driveway (I absolutely loathe driveway cracks). So if it does die, it'll give me an excuse to redo! (Although I will try to save it - but I'm sure it will do fine)

Still might have been cut at one time and since resprouted. Did think ash myself. In any case, don't be over-concerned about a bit of leaf damage. Now that we're talking about it. look around late this summer-at a variety of trees-and you will see an astonishing array of blights, blotches, and blemishes. Completely within what we call "normal".

+oM

Local master gardener says its a Texas Ash from what she can tell. Told me to apply a fungicide with copper and to trim the heck out of the rosemary bush. She said it's not allowing enough air circulation at the base of the tree. Looks like it's hedging time!