Their roots are non-invasive, so if you live in a suitable climate, they can go straight into your ground, and containers aren't necessary. When fully grown, they can be as tall as 20 feet and as wide as fifteen feet.

How far do plum tree roots spread?

These feeder roots extend horizontally to the edge of the leaf canopy, or drip line, and beyond up to 1 1/2 times the height of the tree. A few anchoring "sinker" roots grow down several feet to stabilize the tree. It's likely that your plum tree has some roots that extend 5 feet deep.

How close to a house can you plant a plum tree?

Wall-trained trees should be planted at least 20cm (8 inches) from the wall to allow for the radial growth of the trunk. To keep root problems to a minimum, dig the planting hole about 20cm-40cm away from the wall, and lean the young tree into the wall, so that the roots are away from the base of the wall.