Plums (Prunus spp.) Plums come in a wide range of shapes, sizes, colours and flavors. They are possibly the easiest stone fruits to grow. Most varieties are relatively compact with a shrub-like growth pattern. Please note: European and Japanese plums do not cross-pollinate. European Plums European plums bloom later than Japanese varieties and have firmer flesh. Good for drying, canning and preserving as well as fresh eating. They are very productive but may take a year longer to begin bearing. We’ve selected the most black knot resistant varieties. 1.25-2m (4-6 ') bareroot trees