Peaches are edible, juicy fruit with restorative properties. Peaches vary in size greatly. The smallest are the typical size for a Mushroom World fruit and the largest are roughly twice the size of Hoofer the Wildebeest from Donkey Kong Jungle Beat. However, only the largest peaches grow in Mushroom World. Peaches have become a symbol of Princess Peach as a result of her use as an emblem for her band, the Peach Hit Five in Super Princess Peach.
Although Peachy Peaches have a similar name and appear nearly identical, Peachy Peaches are actually created through human means, while peaches grow on trees.
Peaches are based upon the real-world fruit of the same name.
Mushroom World Peaches
Peaches grow on trees. The only two known peach trees are located in the Peach Kingdom, specifically at the farthest reaches of Arctic Plunge and Ancient Foundry. These trees are capable of growing peaches of enormous sizes almost instantaneously. The fruit produced by these trees are the largest known peaches in the Mushroom World. Smaller ones have only appeared in the Super Smash Bros. world.
While peaches are not commonly eaten in the Mushroom World, their presence has lead to the conception of the term, "peachy." This word can either be used to describe flavor or show one's positive opinion regarding a situation. While adventuring with Mario, Princess Toadstool was eaten by Belome. He commented that she tasted, "peachy" in Super Mario RPG. Later, Princess Peach would adopt this as a catchphrase, first using it during her second kart tournament and later while rescuing Mario from Bowser in Super Princess Peach, and once more when doubling herself during her adventures in the Sprixie Kingdom in Super Mario 3D World.
Donkey Kong's Encounter
Donkey Kong set out on a quest to dethrone the Peach Kingdom's king, Torch Tusk in Donkey Kong Jungle Beat. Along the way, he found both of the peach trees in the kingdom, one in Arctic Plunge and the other in Ancient Foundry. Before he continued on his way, he ate one gigantic peach from each of them.
Peach Hit Five
While Peach was rescuing Mario, Luigi, and the 112 Castle Toads who had been kidnapped by Bowser and the Koopa Troop in Super Princess Peach, the princess collected songs and voice samples that were hidden on Vibe Island. Having done so, she created a band, the Peach Hit Five, and performed these songs with them. The group decided to use a peach as part of the band's logo.
Super Mario Momotarō
In Super Mario Momotarō, an elderly couple's grand-daughter was kidnapped by an evil ogre. However, a large peach fell from the sky and split open upon the ground, revealing Momotaro. When he discovered what had happened, he set out to save the grand-daughter. He wore a headband emblazoned with a peach symbol.
Super Smash Bros. Brawl
In this world, Peaches appear during Peach's Final Smash, the Peach Blossom. The move puts all of Peach's enemies to sleep while normal-sized peaches fall from the sky. Because of the state of her opponents, Peach is free to consume all of the peaches and restore her health. However, if she isn't quick enough or her attack misses, her opponents are able to eat the peaches as well.