C187 Taoism
Yes, peaches are holy books, such as "The Peach of Heaven shines brilliantly"; such as "Throw me a peach of wood, and give it back to Qiong Yao".
It could also be said that it was a common occurrence, such as the luck with the peach blossoms or the peach talismans.
What the Queen Mother had planted in the Immortality Peach Garden were peaches