Common Red Maple Tree Diseases You Should be Looking for


Bright red maple trees capture the essence of fall, but disease can devastate maples before they get a chance to shine.

Fortunately, you can identify and even prevent red maple tree diseases before they start. Diseased maples may have curling leaves, dark spots, dead branches and twigs, black mold, leaf cankers, mildew, tiny “pimple” bumps, and pesky insects.

If left untreated, diseased maples can pose serious health and safety hazards. They’re more likely to topple over and damage your roof. Worse yet, a dying maple could injure bystanders, which is a huge liability.

Are you worried about that beautiful maple tree in your yard?

Don’t risk the consequences of disease. Learn more about tree diseases and how to keep your maples gorgeous and happy.

Maple Fungi Disease

Fungi is the biggest culprit of maple tree diseases. One of the most common fungi-based maple diseases is Anthracnose.

Several fungi tree diseases fall under the Anthracnose umbrella. There are many symptoms to watch, including brown spots on leaves, dead branches, and leaf curling. Maples with Anthracnose lose their leaves earlier than healthy maples.

This disease spreads rapidly during spring and summer, and rainy seasons increase the risk even more. Young maple trees are also more susceptible to this disease than older trees.

How to Treat and Prevent Anthracnose in Maples

Luckily, early intervention can save your diseased tree.

First, learn more about red maple tree pruning. Get rid of any diseased branches and leaves, and dispose of them quickly. Dead tree parts and debris are magnets for moisture and disease.

Try to keep your young maples as dry as possible when it’s not raining. Don’t point sprinklers at maples nor leave the ground covered in wet leaves.

Attack of the Lichen

Is your maple’s trunk turning green? That would be lichen.

Lichen is actually a cross between algae and fungi. It has an unmistakable light-green, crusty look. It piles up on the maple’s tree trunk, branches, and leaves.

This problem afflicts many tree species. Fortunately, lichen isn’t nearly as harmful as some tree diseases. Lichen falls off and goes away on its own in many cases, but it’s best to remove it right away.

Lichen Treatment

First, chip off any lichen on the truck. Next, remove lichen from leaves and twigs; if there’s too much, just prune them.

Don’t leave any fallen lichen on the ground. Lichen is lightweight, so the wind picks it up. Once lichen attaches to another tree, it quickly spreads.

Lichen also spreads with moisture, so keep the area around your maples dry. Throw away moist fallen leaves, especially after rainstorms.

Spot and Prevent Red Maple Tree Diseases

Maples are the rockstars of autumn. Don’t let them succumb to disease before the season starts!

Moisture, wind, and debris are three culprits behind nasty red maple tree diseases. Look for visible signs, keep your trees dry, and prune consistently to decrease the chances of disease.

More homeowner hacks are on the way. Bookmark the blog to stay updated on the latest improvement tips and tricks!

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