Zones 3 - 8
University of Wisconsin River Falls. Very popular and hard to come by! A cross between cherry plums and conventional Japanese dessert plums, Black Ice is exceptionally winter hardy and early ripening, making it a great choice for northern gardeners who want to grow fruit. Compact growth makes it easy to manage. Requires a pollinator (Toka).
Zone: 4 - 8
Blue - European Plum. Good eaten off tree. Excellent for dessert, jam and preserves. Tender, juicy flesh. Considered the best blue cultivar in Wisconsin and Minnesota.
Pollinator, Hybrid with large fruit with dark red, russet-dotted skin. Flesh is yellow, juicy, and sweet. Heavy bearing tree lacks hardiness in northern areas. Often sets fruit the first year. Clingstone.
Zones 3 - 8
One of the best pollinators. The medium sized fruit has lovely, apricot-colored skin and rich flavored flesh. It is self-pollinating but generally it will bear more fruit if there is another plum nearby. It will usually bear fruit as a young tree. Ripens mid-August.
Plums are the most maddening of all tree fruits to me. But when you bite into a big Pipestone, it is all worthwhile.
With most plums, as they are a hybrid, they have an odd number of chromosomes, (think ‘Mule’), they are sterile, and so they will need a pollinizer.