Peach stains are much like any fruit stain. It's important to treat the stain as soon as possible. First, remove any excess pulp from the fabric with a dull knife. Try not to push more stain into the fabric.
Flush the stained area with cold water. As soon as possible, work some laundry detergent or stain pretreater into the stain. Work it in well and rinse with hot water. If the stain is gone, launder the garment as usual.
If the stain remains, mix a solution of oxygen-based bleach and warm water. Allow the stain to soak overnight. If stain is not gone, repeat this step. If no stain remains, launder as usual.
If the garment is dry clean only, point out and identify the stain to your professional cleaner. If you are using a home dry cleaning kit, be sure to treat the stain with the provided stain remover before putting the garment in the dryer bag.
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