The large, round, inedible fruit of the Osage orange tree ( Maclura pomifera ) is often referred to as a “horse apple.” The term “horse apple” is a common name and, despite the implication, these fruits are not generally consumed by horses or other livestock. The primary usage of these fruits revolves around their purported ability to repel insects.
Historically, Osage orange trees were planted as living fences due to their thorny branches and dense growth. The fruit’s potential as a natural insect repellent has led to its placement in homes and around gardens. While anecdotal evidence suggests effectiveness against insects such as spiders, cockroaches, and crickets, scientific validation of these claims remains limited. Further research is needed to determine the specific compounds responsible for any observed repelling properties and their efficacy.
