The liquid is sap from the peaches. It can be from weather related injury or bugs. Not sure of the spots but I always let little things like that go on my trees. Those leaves are 95% intact they will do fine at photosynthesis if it spreads you might have to do something.

Well, it looks ok now but I've looked at some photos of what it *could* be and it can devastate stone fruit trees. I'm hoping to nip it before it gets worse. Most of the leaves have at least one or two of these lesions, so I can't just pluck off all the leaves that display them either. I hope it won't get worse but I'd like to identify it in case it is something that could worsen or spread to my other plants. :(

I'd say it was shot hole.

http://ipm.ucanr.edu/PMG/GARDEN/FRUIT/DISEASE/shothole.html

Yeah, I agree that's what it probably is. Is there any way to treat it now that fruit has set? I see that the time for use of copper fungicides has passed. Immunox says it works on shot hole but I'm not sure if it works on the bacterial or fungal, or both. I went outside and it looks like the branches are affected as well, but the sun was setting so it's hard to say for sure. Immunox says to apply before infection occurs, but then turns around and says to apply every 7-14 days while disease symptoms persist, so I'm a little confused.

All my peaches have the holes in the leaves. Not much you can do for in and in most cases doesn't cause a problem. I would save the fungicides for brown rot that will destroy the peach crop. Some people alternate the fungicides to keep the brown rot from developing resistance.

Thanks! What fungicides do you rotate with? There seem to be a bunch that people use... on another post I saw here this guy was basically just nuking his peach trees every year with like 5 different -icides! I didn't realize they were so susceptible to disease.

I use a product called Infuse. It was the old Monterey Fungi Fighter (MFF). You spray it every 21 days, no more than 4 times a year. I do not spray if the peaches are going to be ripe in the next 30 days. When the peaches are harvested I quit spraying. If after 21 days and no rain is forecast, I will wait until the day before ( or after if an unexpected rain comes).

The first year or 2 you may get by without any spraying. In dryer climates you can get by with less spraying. I use to live in a drier climate and brown rot would get some of the fruit but not all.

Plum cucurlio is another pest that can hurt a crop. It lays its eggs and larvae eats the peach. Scab and scale can also pose a problem. I do use a dormant oil spray and all copper in winter. I live in a very humid area and it can be difficult to grow stone fruit.

I live in 6A so it's not quite as humid up here. I have been spraying them with neem, which I assume is contributing to the problem due to the runoff.

I have this peach for 3 years and this spring made lots of flowers and lots of peaches, but being attacked by Beatles so been spraying with 7, but now the peaches are less and they seem to not grow anymore and sap is coming out of them. Any help please dont know any other way of treating this tree but still dont know what to do and why are they not growing in size anymore. Thanks