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The Branches on My Evergreen Trees Are Turning Brown

Updated February 21, 2017

Though evergreen trees keep their colour throughout the year, they often start to turn brown because of pathogenic disorders or poor cultural management. Discolouration of evergreens starts from the needles and spreads throughout the branches and whole tree.

Identification

Browning evergreen disorder usually is referred to as needle blight. The problem is common in arbor vitae, juniper and yew trees. Symptoms of needle blight are more pronounced on pine and spruce trees.

Cause

Insufficiently irrigated trees are highly prone to the disorder and start to brown because of drought. Poorly watered trees also become susceptible to winter damage that causes browning. Root rots caused by fungal infections are among the pathogenic reasons for brown needles and branches. Evergreens growing at higher elevations are more likely to suffer root rot.

Damage

Initial signs include needle discolouration, where large numbers of needles start to turn yellow, purple or red, eventually turning brown. Discolouration starts from the top, and soon entire branches and the tree assume a brown look. If disorder is not corrected in time, the affected tree dies within a couple of seasons.

Prevention

Water trees adequately, as this protects them from drought. Sufficient irrigation is especially important during warm weather. Apply mulch to retain moisture in roots. Avoid over-watering, as this promotes fungal growth that causes root rot. Feed trees in spring with a balanced fertiliser.

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About the Author

Irum Sarfaraz is a freelance writer with over 20 years of nonfiction writing experience in newspaper op-eds and magazine writing, book editing, translating and research writing. Sarfaraz is originally from Pakistan and has been published in both American and Pakistani newspapers and magazines. She holds a Bachelor of Arts in English literature, and diplomas in nonfiction writing.