Each spring the adult fly stage of the Elm Leafminer deposits larva into the leaves of our Elm trees. This larva has the potential to devastate the leaf canopy of some of our most statuesque trees. Leafminers are larvae of Sawfly wasps that feed in between the epidermal layers of a leaf. As the larvae […]
Tree Top Times
Effect of Colorado’s Extreme Weather on Plants
Colorado’s extreme weather conditions can take their toll on sensitive trees, shrubs and flowers… Spring conditions in Colorado put trees to the test. Late snow and overnight freezing often damages newly emerging flowers and fragile leaves. Damaged tissue will become distorted and discolored, and eventually die off. Trees will have to deplete their energy reserves…….. […]
Leaf Infections in Denver
Tip of the Month: Fungi Many clients have been noticing the presence of various “leaf spot fungi” on several of their landscape trees. This time of year we see the end result of many leaf infections that started back in the spring. Some of the most frequently infected trees are the Aspen, Cottonwoods, Crabapples, Apples […]
Fireblight and Dutch Elm Disease
Pruning your trees this fall Fall is the best time of year to prune trees that have related pathogens. Fireblight and Dutch Elm disease are two diseases that have to be taken care of in the dormant season. Many homeowners see the effects of Fireblight in the summer time and become anxious to do something about […]
Japanese Beetles in Denver
Japanese Beetle is making its presence known in turf areas and on shrubs and trees alike. The extreme temperature has taken a toll on many of our lawns. Large brown patches from the intense sun are made worse by a very unwelcome pest. The Japanese Beetle is making its presence known in turf areas, and […]
Preparing Your Trees for Winter
Time to prepare your trees for winter. The summer seems to have sped by faster than usual this year. The relentless heat of June, July and August is behind us. September brings the hope for cooler nights and more average daytime high temperatures. This is when many of us take a breath, with the kids […]
How to Prepare Your Trees for Winter Storms in Denver
The end of summer is approaching and it is time to prepare your trees for the storms of winter. Each fall many homeowners scramble to prepare their landscape for winter and the intense storms that follow. Fall pruning helps to remove potential hazards that arose during the growing season. Thinning the canopies reduces the “wind […]
Voles in Denver
Have you seen vole damage in your landscape? Here are some examples: In Denver, during most summers voles will move into wild or native areas and feed on fast growing grasses and small shrubs. However, this year we have seen active burrowing in turf areas throughout the entire summer. The voles use the burrows that […]
Necrotic Ring Spot and Ascochyta Leaf Blight
This summer has left its impression on many areas of our lives. The frequent and harsh hail storms have smashed windows, broken siding, and dented cars. The plentiful rainfall has helped many trees to flourish. The moderate temperatures have allowed many people to sit back and enjoy a lazy summer. However, one thing that seems […]
Ash Tree Decline in Denver
When several factors combine to cause stress and deaths in a tree species it can be labeled as a “Decline Complex”. This tag has been assigned to several situations in the past twenty years, including Sugar Maple Decline Complex in the eastern United States. Damaging agents such as drought, vascular diseases, advanced age, and internal […]