Aspen Tree Care Health
“Aspen leaf spot, or ink spot can be prevented through good cultural practices. Rake up the leaves in the fall and fertilize, ” said Jeff Disler, Plant Health Care Consultant for ArborScape. Marinossa leaf spot disease or ink spot is a minor fungal disorder that can discolor the leaves. We also recommend aphid and other pest control to protect and maintain the tree canopy before they eat all the leaves.
One bad winter will not automatically send an aspen into decline but does affect how it looks. Remember that an aspen has a short life span, around 30-50 years.
It’s important to persistently fertilize aspens and spray them for aphids during the summer and oystershell scale during the crawler stage in March and later in the season. Oystershell scale will suck the vital juices from an aspen (and 50 other tree species) according to W.S. Cranshaw at Colorado State University, if not treated at the right time, in the right way. Scale creates an un-naturally smooth sheen on aspens which choke its transpiration. Cytospora canker can also kill an aspen if left too long to destroy the tree.
Aspen Tree Trimming
Trimming dead and diseased branches help the aspen regenerate. It will slow disease cycles. And it will make it look better. Aspen are iconic Colorado ornamental trees especially in a xeriscaped installation and require less shaping, making all but the tallest trees cheaper to trim. However many aspens on the Front Range are at the end of their 25 to 30 year lifespan. A Denver tree trimming expert may suggest removal and replanting to as a better use of your money.
Aspen Tree Removal
Removing an aspen is relatively cheap compared to a cotton wood removal because of its smaller size at maturity. Keeping them removed can be a different story. Aspen are clump trees so naturally “volunteer” ie growth new trunks without your permission or desire. It is a challenge to get all of the root structure. ArborScape has one effective AND organic technique to prevent that.