I think for the most part, my tree is very healthy. Lots of new and lush growth. I did have a problem a few weeks ago with something chomping on the leaves as evidenced on just a couple leaves. I tried some homemade insecticidal soap, but that didn't work. So I had to use some Sevin. I only used it once, but that seemed to have corrected the problem. There is no evidence of any further damage (I think the same thing may have been eating my sage....which was taken care of also).

Anyway, I noticed the other day that on one or two leaves there are yellow spots. The tree is in Miracle Gro soil that feeds for three months and is only about a month in. Also, the tree started to bloom, so I supplemented it with some Osmocote.

I am wondering if perhaps I'm guilty of over-watering or if it's something else. It's been HOT here (97 degrees), so I've been giving it a drink each day. It does have good drainage. I would like to reiterate that the leaves aren't yellow and it's literally just a couple of them. But there are tiny spots (patches) of yellow on them.

I don't know if it's important, but the tree gets direct sunlight from about 9 in the morning til 6 at night. Too much sun? Should I move it to a different location? It's been stupid hot here as I mentioned.

I have looked through many. many posts here where people complain about "yellowing" of leaves, although I've not seen any that look like mine. Mine are "spots" of yellow on just a couple leaves. I'll try and post a picture. Any advice would be greatly appreciated....Millet, looking in your general direction.

Pics:

Yellow Spotting on the Leaves:

On the first picture it could simply be an old leave preparing to death (giving back its magnesium to the tree).
On the second, it is sun burn.

Thanks for the reply. I contacted the guy I got the tree from and he said it could be the sun also. It does get FULL sunshine from around 9am to 6pm. I wonder if I should move it to part of the yard that does get a little shade during the day?

I personally wouldn't worry about it. I have several citrus that are very much full sun (middle of a field, light from sunrise to sunset). I imagine it'll adjust.

It is very minor damage, but it does look like sun--citrus do not need full sun--they are full out at about 1/3 full sun.

Skeeter....right now it's sitting out near all my herbs, which get full sun. I could move it toward the house where it will probably get a little more shade as the sun changes position. Do you think I should?

If you live in Zone 9 or 10, definitely moving any young tree that gets FULL sun in the shade during the hottest afternoon sun is a good idea. Esp. a tree in a smallish container (for it's size/roots). I recently put up my shade screens on the south side of my yard for container citrus.

In other zones, it doesn't matter much (during summer) unless you're seeing more moderate sunburn (the one in the pic is mild and I'd ignore it unless it spreads to more than 5 leaves or so). I'd be careful if your in relatively cold climates during summer, the afternoon sun is important for your root zone temps to increase.

Thanks C4F and all for your responses.
According to the map, in my part of NC I'm in Zone 7.
We're having a crazy hot spring/summer here already. Temps exceeding 98 degrees. I'm just wondering if the blazing sun beating down on that dark container I have my tree in is getting too hot and if perhaps I should move it where it will still get lots of sun, but some filtered sunlight during the day.
The damage is limited to just a couple leaves and I haven't noticed any new yellow spots.
It does seem to be growing really well. Just within the past week there have been several new shoots emerging.

And this may seem like an amateur question, but I AM an amateur. So...I had noticed a while back that something was munching on my leaves. Damage was limited to 2 leaves before I treated the plant. No new damage since then. Question....is it alright to remove the leaves that had been damaged?

You can remove the damaged leaves if you wish, however, these leaves are still manufacturing photosynthates (sugars), which are the tree's food source. A black container receiving the direct rays of the sun will reach temperatures of 125+ in a matter of 10 to 15 minutes. Temperatures this high can easily kill the roots that are growing near the hot side of the container. There are many posts on this forum concerning over heated containers. Use the search function to locate them. I paint all my ooutside containers white during the summer to reflect the sun's rays, thus keeping the tree's root zone much cooler. Other members wrap their containers with tin foil, which also works very well to protect the tree's root system. Still others place the container inside a larger container. - Millet (932-)

Thanks, Millet. I really don't want to alter the container the tree is in. I searched for quite a while for one I liked, and I like the look of the "weathered" urn I chose. While not ceramic, it's well-made and heavy (some type of metal), was a bit pricey and will look nice inside during the winter months. I do imagine it may get quite hot in the blazing sun so that is of some concern. I think the option of placing it inside another container is a good way to go.
As for the damaged leaves, I think I'll leave them alone. It was purely a cosmetic thing and if they're still providing food for the plant then they need to stay til they drop off by themselves.
Thanks for your input. Much appreciated.