What is the best pesticide spray for peaches? When and how should they be sprayed?
These articles will help you with a spray schedule.
http://www.ent.uga.edu/peach/peachguide.pdf
https://www.gardeningknowhow.com/edible/fruits/fegen/fruit-tree-spraying.htm
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-leaf-curl.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-borer.htm
We have a peach tree and it has given us tons of peaches each year. My husband noticed some red ants crawling on the trunk and they appear to be eating the sap. Is this normal or do we have a problem?
This could be a serious disease such as canker or Gummosis.
The ants could also be attracted to honeydew, residue from insects on the tree.
You will need to do further inspection of the the tree; it's trunk, branches and leaves.
Here are some articles to help you pinpoint the cause.
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
https://www.gardeningknowhow.com/garden-how-to/info/what-is-honeydew.htm
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-leaf-curl.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-borer.htm
https://www.gardeningknowhow.com/plant-problems/disease/weeping-amber-in-trees.htm
What would make the leaves start falling off of a peach tree that has peaches on it? The peaches are still growing but the leaves are dying out.
Some leaves will yellow and drop off the tree normally, as they age.
If the issue is more severe, you will need to investigate a bit further.
Are there any marks, spots, color changes on the leaves?
Any cracks, markings, soft spots on the branches or trunk?
Any signs of insects?
Here is a link that has information on the most common diseases of Peach Trees.
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
My peach tree is weeping some kind of crystallized "stuff" at the bottom of the tree trunk. I had left the original piece of protective paper that comes with the tree when bought about 3-4 years ago on the tree to prevent my two dogs urinating on the tree trunk. I cut the paper off because I could see the trunk was getting larger and the paper was getting tight. The tree trunk seemed to be very wet (soggy) and I saw a bug dash out when I cut the paper off. I couldn't see what kind of bug it was. The tree trunk has been exposed now for almost a week and has not turned the regular color of a trunk (brown). It is now excreting or weeping what looks like to be crystallized sap at the bottom of the tree trunk. However, the leaves are beautiful. So...what did I do to my peach tree??
Peach Trees do suffer from a few diseases and pest issues.
This appears to be a Canker on your tree trunk. It may have started from an injury to the tree.
Treatment is simply making sure the tree is a healthy as possible.
Here are some links that have more information.
https://extension.psu.edu/plants/gardening/fphg/stone/diseases/cytospora-canker-of-stone-fruits
https://www.gardeningknowhow.com/plant-problems/disease/weeping-amber-in-trees.htm
https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-borer.htm
Every year our peach tree has the same issue with no fruits. As you can see, there are white dots on the leaves and also the leaves shrivel up. The tree is a Prunus persica, red peach.
This is Peach Leaf Curl.
Here is an article that explains this issue and how to treat.
https://www.gardeningknowhow.com/edible/fruits/peach/peach-leaf-curl.htm
Why do they have sap seeping out of fruit?
This is most likely caused by an infestation of fruit moths.
Here are some articles with more information.
http://entnemdept.ifas.ufl.edu/hodges/ProtectUs/presentations/peaches_arthropods.pdf
http://www.clemson.edu/extension/hgic/pests/plant_pests/veg_fruit/hgic2209.html
https://www.gardeningknowhow.com/edible/fruits/peach/common-peach-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/nectarines/nectarine-fruit-oozing.htm
My peach tree has developed a crack near the base of the tree that has turned black. What has caused this and what can I do, if anything?
It sounds like your tree may have been affected by frost crack. Young trees are especially susceptible to it.
There is little you can do now for the tree to fix the crack, but I would recommend treating the crack with a fungicide and pesticide once a month or so until it heals over. This will help prevent disease or pests from attacking the tree through the wound. Other than that, leave it alone to heal. It will not kill the tree but will likely leave a scar on the trunk.
Here is some information that may help you:
https://www.gardeningknowhow.com/ornamental/trees/tgen/cracking-tree-trunks.htm