Plums are very hardy but blossom early, making the crop susceptible to late Spring frosts. They should be planted no more than 10-15 feet apart in an area with good air drainage (high spots where cold air flows away from the tree) and good soil drainage. Plum trees are attractive, require little pruning, and grow to a height of 12-15 ft.
We use Prunus americana as a rootstock for our plums.
Plant plum trees no more than 10 to 15 feet apart.
A grafted plum tree is not able to pollinate another tree of the same name unless it is marked “self-fertile.” To ensure that your grafted plum tree will give fruit, you should choose two different varieties from within the same pollen group, designated by the letter “A” or “B”.
How long before it fruits?
In good soil and with proper care (rabbit protection, mulching, attention to pest problems) plum trees will bear fruit in 3 to 5 years.