Environmental Issues

Blog Archives

Information related to tree care and the environment.

Decline in Spruce Trees

Over the past decade, spruce trees have suffered an abundance of issues. All species of spruce, including Colorado blue and white spruce, are being affected, but particularly concerning is the prevalence of ‘decline’ symptoms on well-established Norway spruce. Originally a

Posted in Environmental Issues, Pests and Diseases

Ivy on Trees is a Concern

Although long used as a groundcover, ivy is harmful for trees. It is not indigenous, and many species are aggressively invasive and displace native species. In North America, the most common culprits are English ivy (Hedera helix) and Irish, or

Posted in Environmental Issues, Tree Advice

Lichen and Trees

So the trunk of your tree or shrub is covered in crusty green stuff – don’t panic! It’s unlikely that this ‘green stuff’ is harming the tree. What you are observing is the growth of lichen on the bark. Lichens

Posted in Environmental Issues, Pests and Diseases, Tree Advice

Look Out for Leaf Curl and Leaf Blister

Leaf curl and leaf blister are a group of diseases caused by the fungus Taphrina. Taphrina caerulescens is the causal agent of oak leaf blister, and Taphrina deformans is the causal agent of peach leaf curl. These diseases are common

Posted in Environmental Issues, Pests and Diseases, Tree Advice

Does Your Landscape Already Look Like Fall?

Many trees and shrubs in Indiana are losing an abnormal amount of leaves, or showing signs of foliar damage as a result of unusual environmental factors this year. Spring-like weather arrived as early as February in 2017, and by early

Posted in Environmental Issues

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