Fungicides with a different group number are suitable to alternate in a resistance management program. Because they are less than one-eighth of an inch long, the beetles themselves are rarely seen. When and What to Spray on Peach Trees. This tiny beetle occasionally attacks and kills peach and plum trees, as well as many other trees in the home landscape. You can whip up basic homemade fungicides in a few minutes, or you can make more complicated ones with multiple ingredients.

Powdery Mildew Fighter. Read on for a typical schedule for spraying peach trees. Powdery mildew is the bane of all gardeners. First and foremost, be sure to familiarize yourself with the existing or potential pest and diseases issues for peach trees in your area. Peach trees are relatively easy to grow for home orchardists, but the trees need regular attention, including frequent peach tree spraying, to remain healthy and produce the highest possible yield.

7 Homemade Fungicides. I prefer the basic recipes, but sometimes you need to hit a fungicide with the big guns. Other systemic fungicides are applied to and absorbed up through the roots, moving throughout the rest of the plant. Leaf curl, brown rot, blossom blight and peach scab are among the most common fungal diseases that affect the peach tree. Pruning in fall prior to applying any fungicides can reduce spore numbers overwintering on the tree and reduce the amount of fungicide needed. If a tree is severely affected with peach leaf curl this can stunt its growth, so consider thinning fruit later in the season.

Spraying Peach Trees. 1. Actually, it is not the beetle that kills the tree, but the disease it carries and inoculates into the tree. Treatment for Fungal Diseases on Peach Trees By Kaylee Todd Fungal diseases occur in peach trees when an organism invades the tree. The fungus can kill the peach tree or infect the fruit with blemishes or rotting. Myclobutanil Specifically, myclobutanil controls powdery mildew, scab and rust on apple trees; brown rot, powdery mildew and blossom blight on stone fruits like peaches; and powdery mildew and black rot on grapes. When the spores are protected, there is not much you can do. Your local county Cooperative Extension is an excellent resource. For folks who applied their "dormant" fungicide spray on their peaches AFTER the 70°F days in February: this might be your issue. If any kind of bud swell occurred in February due those very warm days, the peach leaf curl fungal spores most likely were protected when a dormant fungicide spray was applied later.