AusBonsai

My crab apples leaves have turned yellow and have started to fall off. I have put the tree in the shade under the bench, i'm worried that anymore heat will kill it. Any advice on what to do is appreciated.

Soil looks pretty moist
Have you been allowing it to dry out between waterings?

Take the fruit off! This will also weaken the tree.

Theo

If not overwatering then maybe a nitrogen deficiency.
Have you been feeding it?

No idea what wrong with this tree. My guess is the roots rather than the heat.