Signs & Symptoms of Evergreen Diseases

Evergreen diseases are usually fatal to shrubs and trees. Know about the symptoms and signs of the most common diseases so that you will know right away if there’s a potential issue. Recognizing the disease early and taking fast action could mean the difference between replacing or saving a favourite evergreen Tree Trimming saw Phoenix, AZ or Tree Trimming & removal Phoenix, AZ.


Cankers are a common problem for evergreens. The general signs of cankers are sunken dead patches on the bark and brown or yellow wilting leaves. The cankers may ooze resin or there may be fungus growing on the canker. Cankers can be clearly discolored or barely noticeable. They can occur on the branches and trunks of evergreens. When the cankers are on a division, prune off the division. Disinfect the Tree Service insurance Bakersfield, CA saw or loppers with family disinfectant before utilizing them and between every cut to avoid spreading the disease. Wipe off the disinfectant the cutting tools before using them on the Tree Pruning service Phoenix, AZ. Evergreens with cankers on the trunk will usually die. Assess and remove them, if needed.

Crown, Collar and Root Rots

Evergreens are susceptible to crown, collar and root rots. The symptoms are similar to those for drought stress. The evergreen will wilt, leaf will likely be stunted, turn yellow or brown and drop. Normally a canker, stain or string will run vertically up the trunk. Should you cut off the bark, the wood under may be gray or brown. There might also be black or red sap that oozes in the discolored area. Old evergreens experiencing rot grow more slowly, branches die off and the whole evergreen commonly dies. Overly moist soil promotes this respiratory disease. It could be possible to save the evergreen by carefully digging the dirt away from the crown and upper roots and letting them dry out.


Evergreens are susceptible to rust diseases. The symptoms of the fungal diseases are powdery-looking orange, red or yellow fungal spores on the needles or leaves. Spores form first on the bottom of the leaves but, since the fungus progresses, they move to the top. The leaves may also drop off. On a few evergreens, orange bows may look gelatinous. Some kinds of rust fungus induce the evergreen to come up with galls, cankers or witches’ brooms (distorted, discolored bands of invading that look like a little broom). Prune off infected needles, branches or leaves. Remove debris from around the foundation of the evergreen and remove it. Water that the evergreen from under the branches and don’t wet the leaves.

Shoestring Disease

Evergreens can develop armillaria root rot, also known as oak root fungus and shoestring infection. It relaxes the trunk at the base of the evergreen and the significant roots. Indicators of armillaria root rot are small, discolored needles or leaves which drop off. There might also be mushrooms growing on the trunk. Root-type growths which are reddish-brown or dark may be found on the main surface or root. Entire branches die, commonly on peak of the first. The entire evergreen may die from this disease. There’s not a cure. Should you remove the evergreen, be certain to remove all of the dead roots in the Landscaping design Redding and replace it with something which has good immunity to the infection.