The Rose of Sharon will grow from seed easily. There are hundreds of seedlings constantly in the lawn adjacent to where they grow. It is all from dropped seeds.
Well , don't feel alone. I have what I consider a few mementos in my garden and yard. About 25 years ago, my parents (now departed) planted some plum trees and a few currant bushes. Still have the trees as well as a few more that self seeded. Have been sharing the seedlings with other...