Do hemlock trees turn yellow in the fall?
Emily Sparks
Published May 27, 2026
Do hemlock trees turn yellow in the fall?
A common question we get in the fall regarding hemlock and other evergreen trees is, “Why are my trees turning yellow?” In many cases, it is more than likely natural needle loss. The difference with hemlocks, for example, is they just don’t lose all their needles at once.
Why is my hemlock dropping needles?
In addition to needle drop, some dieback of twigs and branches can occur. Several of the most common factors are wet soil, drought or dry soil, and low light.
How do you know if hemlock is dying?
The most common problem with hemlocks is infestation by an insect called hemlock woolly adelgid (Adelges tsugae). If you see deposits of white, cotton-like masses on between the needles, then this is most likely the problem.
Do hemlocks lose their needles in winter?
This family of trees is fully deciduous, meaning they lose all of their needles every fall. Bare-branched all winter, they green up the following spring.
How do I know if my western hemlock is dying?
Signs of tree fungal disease Needles turning color and/or falling off. Decaying roots. Fine strands on needles and branches.
Can you save a dying hemlock?
If you see deposits of white, cotton-like masses on between the needles, then this is most likely the problem. This disease is hard to cure but it can be controlled, particularly if it is caught early. For the home gardener the best treatment is to spray with natural insecticides such as pyrethrin or neem oil sprays.
Why are the leaves on my hemlock tree turning yellow?
A common question we get in the fall regarding hemlock and other evergreen trees is, “Why are my trees turning yellow?” In many cases, it is more than likely natural needle loss. Evergreen trees will naturally lose their older interior needles each year the same way a maple tree changes color and drop its leaves.
Why do hemlocks lose their needles every year?
In many cases, it is more than likely natural needle loss. Evergreen trees will naturally lose their older interior needles each year the same way a maple tree changes color and drop its leaves. The difference with hemlocks, for example, is they just don’t lose all their needles at once.
When to prune a hemlock tree with disease?
Informational table showing disease name, symptoms, pathogen/cause, and management of Hemlock diseases. Slightly sunken cankers girdle and kill branches. Prune infected branches. Needles in the lower part of the tree turn brown and fall in late summer, leaving bare twigs.
How can I get rid of insects on my hemlock tree?
There are topical and systemic options for treating these pests. The adelgid and scales do not move once settled on a branch or needles. For this reason, they can be treated very effectively with horticultural oil in most cases, which works merely by smothering the insects in place.
A common question we get in the fall regarding hemlock and other evergreen trees is, “Why are my trees turning yellow?” In many cases, it is more than likely natural needle loss. Evergreen trees will naturally lose their older interior needles each year the same way a maple tree changes color and drop its leaves.
Why are the needles on my eastern hemlock turning brown?
Kabatina juniperi and Phomopsis juniperovora are two pathogens that, while normally targeting junipers, can also invade hemlock trees. The infections cause the Eastern hemlock’s needles to turn yellow, brown or reddish-brown.
Informational table showing disease name, symptoms, pathogen/cause, and management of Hemlock diseases. Slightly sunken cankers girdle and kill branches. Prune infected branches. Needles in the lower part of the tree turn brown and fall in late summer, leaving bare twigs.
Why are the needles on my evergreen tree turning yellow?
This might be why…. Extreme temperature changes over short periods of time during winter months can leave evergreen trees looking a little yellow and sad. There are a number of different reasons an evergreen tree might be turning yellow/brown and/or dropping needles this time of year. Sometimes it’s perfectly healthy, other times it’s not.