The AU Rubrum is an ideal plum for canning, preserving and fresh eating. This plum produces very large abundant crops of delicious sweet and juicy plums. These plums have a sweet red flesh and very dark red skin. Matures about one week after Methley, usually in mid-late June or early July. Partially self fertile, but will do much better production when pollinated with another AU or the Methley plum. Developed at Auburn University.