Some Plums require another Plum variety for pollination.  Some are self-fertile but will have improved production with another variety present.  To use the Pollination Chart: 

1. Select the desired variety to be pollinated from the top of the chart.  

2. Potential pollinizers are listed in the column beneath the desired variety. 

3. If the intersecting square is white the variety will be pollenized. 

4. If the intersecting square is black the variety will not be pollenized.

5. If the intersecting square is grey then the variety is self-fertile but will have improved production with the presence of another variety.