Lots of preparation, patience, and understanding are needed to grow
aspen in the urban landscape. Aspen prefers light soils that are acidic and drain
well, but these conditions are rarely found in urban areas. Aspen will do best
on the north and east sides of the buildings.
If the soil where an aspen tree is to be planted has a high content of clay,
build a berm of sandy loam 18 to 24 inches high. A berm is a mound or wall of
earth. The berm should be mulched and several plants should be planted in the