Most of these diseases can defoliate the tree. Rhizomatic roots of aspen trees play a crucial role in this partial immortality of these trees. Best 18 Places To See Fall Colors In Colorado Uchealth Today The color lasts only about a week in most places. How long do aspen trees live in colorado . The aspen normally will not live long, only about 25 years, when planted for landscaping purposes. Even after careful preparation and care, aspen only live about 25 years in a city landscape. Individual clones (ramet) can survive up to 10,000 years or more. Even after careful preparation and care, aspen still only have a life expectancy of about 25 years in the home landscape. It is well worth the effort to see colors in colorful colorado, however. The peak color of changing aspens only lasts for about a week in colorado. They prefer moist soil but can survive near springs in desert conditions. Although it requires repeated, severe incidents of leaf blight and dieback to k...