'Harvester' Peach Tree Care: Thinning, Spraying, and Fertilizing for a Better Crop

Three Keys to Quality Peaches

Your five-year-old 'Harvester' peach is loaded with marble-sized fruit. To get large, sweet peaches, you must act now.

1. Thin the Fruit

Remove all but one peach every 5–6 inches along each branch. Discard thinned fruit far from the tree to reduce disease carryover.

2. Start a Spray Program

Apply a "Home Orchard Spray" (combined fungicide/insecticide) every 2–3 weeks until harvest to control brown rot and insects.

3. Fertilize Properly

Apply 1 cup of 10-10-10 per foot of tree height now, and repeat in mid-June. Water in well.

Thinning is the single most important step—without it, you'll get many small, disease-prone fruits instead of fewer premium peaches.