Dunbars plum produces a great variety of flavors from tart to sweet. Americana produces more runners from the main trunk like the American plum which can be pruned off and transplanted. The 1/2 inch fruit red fruits are tart but delicious fresh with little astrigency in the skin. Highly productive plant with clean fruit and foliage which does not discolor during the summer. It is not bothered by insects or disease of any type. The difference between this strain and others is the running stoloniferous ability which is highly desirable as a means to clone plants for a long lived plant far better than short lived grafted trees.
To germinate the seeds: Plant in the fall in good garden soil 1/2 inch deep. Seeds will sprout in the spring. Even if it frosts seedlings will bounce back. Some seeds willl remain dormant for an additional season and come up the following spring. For refrigeration mix the seeds with lightly moist Canadian peat moss and refrigerate 33-38 F for 90-120 days. Germination is slow but consistent. When you remove the seeds after 90 - 120 days refrigeration and put at room temperature the seeds will crack open and the roots will emerge. Some of the seeds will need an additional warm and cold period to break the final dormancy. This is common with the Prunus genus.