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 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...
by John Downs | May 2, 2019 | Blog, Emerald Ash Borer
The dreaded Emerald Ash Borer (EAB) arrived in the heart of Boulder in September 2013. Within five years, the beetle spread to Superior, Colorado, a town half way between Boulder and Denver. With little to no predators, this borer is free to move about at will. Click...
