try searching japanese plum or loquat.

Chickasaw plums

I have several loquat volunteers in my yard. If you are in the Baton Rouge area, I'd be happy to share as they will be dug up & thrown away in the coming weeks. (No worries ... I get plenty of volunteers every year!)

I believe the wild plums of the Deep South are called 'Sand Plums'. I love them, too: particularly the way they form those beautiful colonies. TyTy nurseries in Georgia sells them (please google the name: caveats may apply...or bigger nurseries may just be trying to drive them out of business by spreading rumors). Sand plums produce a lot of pollen, and are often used for cross-pollenation in orchards.

Loquats, with the irritating and misleading nickname 'Japanese Plum' (real Plums much like ours have been a cherished part of Japanese culture for many centuries), have very large, dark, evergreen leaves. Their blooms occur in late winter. Blooms are pale and greenish, with a wonderful Almond-like fragrance. The fruit ripens late Spring/early Summer, and is delicious. The large seeds are easy to plant.