They are omnivores. They often take bones out of the trash. Since there is often less food available to wild animals in the winter, they can become hungry. So in the winter time, a possum may eat plants. After this possum had his picture taken, a large peach was put out nearby for it to eat - to apologize for disturbing it.
Possums also help themselves to peaches on the small tree in the photographer's backyard.
Sometimes they nibble the peach while it hangs on the tree, eating half one night and returning the next to finish it. In La Habra, possums seem to want to be be safe when they eat. Possums usually stay close to their home territory, but if they need food, especialy to feed their babies, they may go farther away. A few years ago, a mother possum and her babies had to be rescued from the median of a freeway here in Orange County. She must have gotten there at night when there wasn't much traffic, and then couldn't get back.