potted dwarf peach losing yellow leaves.
My honey babe genetic dwarf peach tree is losing yellow leaves and has rust colored damage on other leaves. The tree as a whole has lighter than normal leaves. The nursery where I purchased the tree looked at the leaf samples I brought in and was sure the tree was stressed from either lack of water or a mineral deficiency.
The tree is planted in a fairly large container and has been since March of this year.
The container and tree are in full sun for 6-8 hours a day.
Watering was being done on a weekly basis. Now I've stepped it up to every 2-3 days, even though the potting soil is moist 4 inches down.
I've fertilized with grow power flower and bloom 3-12-12 about a week ago.
These pictures are from today.
Any help would be appreciated. I've used the search function but found many conflicting opinions.