The fruit has yellow or whitish flesh, a delicate aroma, and a skin that is either velvety (peaches) or smooth (nectarines) in different cultivars. The flesh is very delicate and easily bruised in some cultivars, but is fairly firm in some commercial varieties, especially when green. The single, large seed is red-brown, oval shaped, approximately 1.3–2 cm long, and is surrounded by a wood-like husk.
A medium peach (75g), has 30 Cal, 7g of carbohydrate (6g sugars and 1g fiber), 1g of protein, 140 mg of potassium, and 8% of the daily value (DV) for vitamin C.