Plum tree dropping naked seeds?
My father has been finding naked seeds at the bass of his plum tree. Everything else looks normal but even after putting a net over it to keep out deer, there's still just seeds. Is this a really determined deer, bugs picking fallen fruit clean, or something else?
This does sound like a case of a pest. I would place my bet on birds, though. Possibly squirrels. They can make their way through just about any barrier. they are very intelligent. You can plant citronella geranium, mint, and other strongly scented plants around to help with this.