by John Downs | Dec 12, 2019 | Emerald Ash Borer, Plant Health Care, Tree Health Care
The Ash destroying Emerald Ash Borer (EAB) has found its way out of Boulder with confirmed sightings in Broomfield, Westminster, and now Berthoud. The quarantine was set up in 2013 in Boulder County after the EAB was found near the University of Colorado campus. The...
by John Downs | Nov 25, 2019 | Fire Blight, Plant Health Care, Ross Tree Handbook
As you know, Denver is known for its 300 days of sunshine and surprising weather changes. Winter creates tree care issues for trees but also treatment opportunities for some tree species. Winter Kill and Sunscald Over the last two years, Denver experienced sudden...
by John Downs | Oct 30, 2019 | Fire Blight, Plant Health Care, Ross Tree Handbook
The Denver Post reported on November 2018 that Fire Blight is on the move across the Front Range. Click here to read the article. Fire Blight is a bacterial disease that affects certain tree species in the rose family, including apples, pears, and crabapples. The...
by John Downs | Jul 29, 2019 | Plant Health Care, Trees
Honeylocusts are a popular tree in Denver and the Front Range. However, dry winters, hail damage, late spring freezes, and insect infestations are causing noticeable damage. For example, thinner canopies, branch dieback, and less leafing-out are evidence that...
by David Boswell | Jun 26, 2019 | Cottonwoods, Plant Health Care, Tree Removal
I moved to Denver in the 1980s from the south, and there were two distinct things to this region that I noticed almost immediately – magpies and Silver Poplars. Magpies are one of the most intelligent animals on the planet. These birds can recognize themselves...
by John Downs | May 31, 2019 | Plant Health Care
Short winters and warm springs can lead to Elm Leaf Beetle infestations. Insecticide products successfully control the Elm Leaf Beetle and its larvae. Ross Tree Company has three Colorado Department of Agriculture licensed Qualified Supervisors (QS) to handle...
