Aspen, Quaking (POPULUS TREMULOIDES)
As the breeze blows the leaves of the Quaking Aspen, the quaking of the flat-stemmed leaves create a rustling sound that is reminiscent of the mountain landscapes we love so much. This attractive tree robed in white, textured bark and small, glossy green leaves is highly adaptable to most soil conditions. It grows natively over a very large are of the northern United States and Canada. Suckering occurs as the tree gets older and if left unclipped can create a grove of Aspens. Fall color is beautiful golden yellow.
Growing as high as 40 feet tall with a spread of 30 feet, Quaking Aspen is the most widely distributed tree in North America. It is known widely for it's ability to create a grove from it's suckering roots. If not desired, suckers should be pruned back. Rated at USDA Hardiness zone 2, this tree is an excellent choice in group plantings with evergreens and other deciduous trees and shrubs. Quaking Aspen will grow best in full sunlight and consistently moist well-drained soils, although it is quite adaptable. Grows best in cool, northern climates anywhere from rocky mountain tops to the clay soil in valleys in a wide range of elevations. Generally not tolerant of urban pollution. Aspens require careful monitoring as they are susceptible to a large number of disease problems, including dieback, leaf spots, rusts, powdery mildew and cankers. Diseased trees often suffer premature leaf drop as a result thereof. Common insect visitors include caterpillars, borers, aphids and scale. Treat accordingly.