Maple leaf burn

[hoodbonsai]

Is this from the sun or nutrient burn. I have it in the sun until about 1pm then it’s shaded

 

[Leo in N E Illinois]

The brown may actually be dehydration, did it get dry to the wilt point? If not, then it is too much sun.

Excess fertilizer tends to kill newest growth. Your newest leaves will show damage first if it is excess fertilizer.

 

[ProfessorFarnsworth]

I bought a little maple like this with a bunch of burnt leaves for cheap, it's been up around 100f here. I decided to leave it in full sun all day. I water it probably 3 times a day when my moisture meter says low moist, it's in a nursery pot I decided to leave it in to let it get healthy. It's now very happy and even had some cute pink little new leaves. They seem very happy to take whatever heat and sun with enough water. I also mist it whenever I get an urge to mess with my trees.