do ash borers eat maple trees

Do ash borers eat maple trees? This is an important question to consider since ash borers can cause serious damage to trees. Ash borers are a species of beetle that have become an invasive species in many parts of the world, and they feed on various types of hardwood trees, including ash and maple. In this article, we will explore whether or not ash borers can feed on maple trees.Ash Borers primarily feed on the inner bark of ash trees and other species of trees in the Fraxinus genus. They chew away at the tree’s sapwood, creating galleries that disrupt the flow of nutrition and water. As a result, they can cause extensive damage and even death to ash trees if left untreated.

Ash Borers Impact on Maple Trees

The emerald ash borer (EAB) is an insect native to Asia that has been wreaking havoc on North American ash trees since its accidental introduction in 2002. The species primarily impacts ash trees, but can also cause damage to many other species of trees, including maple. Infected maple trees are vulnerable to a variety of issues, including dieback, bark splitting and woodpecker activity. In the worst cases, the infestation can lead to the death of a tree.

The EAB uses sap-feeding larvae to feed on the inner bark of trees, which disrupts the tree’s ability to transport water and nutrients throughout its system. This can lead to branch dieback and overall tree decline. Trees that are already stressed or weakened due to drought or other environmental factors are especially vulnerable.

Another common symptom of an emerald ash borer infestation is bark splitting and woodpecker activity. Woodpeckers feed on the larvae beneath the bark, which can cause further damage to the tree as they create holes in their search for food.

In severe cases, an emerald ash borer infestation can be fatal for a maple tree. If left untreated or if treatment is not successful, it is possible for a maple tree to succumb to an emerald ash borer infestation within two years of initial detection.

It is important to recognize signs of an emerald ash borer infestation early in order to minimize potential damage and save your maple tree from death or extensive damage. These signs include branch dieback, bark splitting and woodpecker activity around your maple tree. If you notice any of these symptoms, contact a certified arborist as soon as possible for help with identification and treatment options.

The Life Cycle of the Ash Borer

The Ash Borer is an invasive species of beetle that has caused great destruction to ash trees in North America. It is a destructive pest that can quickly spread and cause devastating damage to forests and urban areas. The life cycle of the Ash Borer is relatively short, but it is important to understand how the beetles reproduce in order to control and prevent their spread.

The life cycle of an Ash Borer begins in the spring when adult beetles emerge from their overwintering sites. They fly around looking for suitable host trees on which to lay eggs. Once a suitable tree has been found, the female beetle will bore into the bark and lay her eggs inside. The eggs hatch after a few weeks and the larvae bore deeper into the tree, feeding on the inner bark as they grow. During this process, they create winding tunnels that weaken and eventually kill the tree.

As summer progresses, the larvae develop into pupae which eventually emerge from their tunnels as adult beetles. The adults then fly away from their host tree in search of new host trees on which to reproduce again. This cycle can repeat itself up to three times in a season, leading to greater destruction of ash trees with each successive generation.

In order to protect ash trees from being destroyed by these pests, it is important to monitor for signs of infestation and take steps to control them early on before extensive damage can occur. Methods such as removal of infested wood, chemical treatments, or natural predators are all effective ways of controlling Ash Borers before they can cause too much damage.

Recognizing Signs of Ash Borer Infestation

Identifying the signs of an ash borer infestation is important for preventing further damage to your trees. The emerald ash borer is a small, metallic green beetle that feeds on ash trees, causing them to die. These pests have been known to cause widespread destruction to forests and can even kill healthy trees. Knowing how to recognize the signs of an infestation can help you identify and treat the problem before it becomes too severe.

One of the most common signs of an ash borer infestation is thinning or dying foliage. This is because the larvae tunnel through the bark and feed on the tree’s cambium layer, which is responsible for transporting water and nutrients throughout the tree. As this layer becomes damaged, it can no longer transport nutrients, resulting in thinning or dying foliage.

Another sign of an emerald ash borer infestation is woodpecker activity around your trees. As woodpeckers feed on these destructive insects, they will often leave behind telltale holes in the bark of infected trees as they search for food. If you notice any fresh woodpecker holes near your trees, this could be a sign that there may be an infestation present.

In addition to these signs, you may also notice D-shaped exit holes in the bark where adult beetles have emerged from underneath. These beetles are usually between one-eighth and one-half inch long and have bright metallic green bodies with black markings on their heads and wings. If you see any exit holes or beetles near your ash trees, it’s likely that there are ash borers present in your area and they should be treated immediately to prevent further damage.

If you suspect that your tree may be infested with emerald ash borers, it’s important to take action right away. Contact a certified arborist who can assess the condition of your tree and provide treatment options if necessary. Early detection and treatment are key to preventing further damage or death to your tree caused by these destructive pests.

What Host Trees are Preferred by the Ash Borer?

The emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that infests and kills North American ash species (Fraxinus spp.). EAB prefers to feed on and breed in ash trees, but it can also infest several other species of trees in the Oleaceae family. The most commonly affected trees include white ash (Fraxinus americana), green ash (Fraxinus pennsylvanica), and black ash (Fraxinus nigra). Other host trees may include boxelder (Acer negundo), hickory (Carya spp.), mountain-ash (Sorbus spp.), lilac (Syringa spp.), privet (Ligustrum spp.), and walnut (Juglans spp.).

EAB larvae feed on the inner bark of the tree, disrupting the flow of water and nutrients throughout the tree. This feeding activity creates galleries in which they pupate, emerge as adults, and lay eggs for a new generation. Over time, this process weakens the tree until it dies. EAB larvae are most abundant on small diameter (< 12 cm) branches and twigs in the lower crown of a tree, but they can also be found infesting larger branches and even main stems. The presence of EAB can be identified by examining trees for exit holes created by emerging adult beetles or D-shaped holes created when female beetles chew into bark to lay eggs. Other signs of infestation include thinning or dying crowns, yellowing or browning leaves, S-shaped galleries under bark, larval frass on branch surfaces or at the base of trees near roots, and sprouting from roots or lower trunk.

Controlling an Ash Borer Infestation in Maple Trees

The emerald ash borer is an invasive beetle that can cause extensive damage to ash trees. Maple trees are especially susceptible to infestation from the emerald ash borer, which can cause serious damage to the tree’s bark and sapwood. Fortunately, there are steps you can take to help control an infestation and minimize potential damage.

First, it’s important to identify any signs of an emerald ash borer infestation early on. Signs of an infestation include branches or limbs that die off suddenly, small holes in the bark, and D-shaped exit holes left by adults after they emerge from the tree. If you notice any of these signs, it’s important to take action quickly in order to prevent further spread of the beetle.

Once you’ve identified an infestation, you’ll need to remove any affected branches or limbs from the tree as soon as possible. This will help prevent the borer from spreading further and causing more damage. Additionally, insecticides formulated specifically for use against emerald ash borers may be used on trees with severe infestations. Be sure to follow all label instructions carefully when using any pesticides in order to reduce the risk of harm to people or animals.

Finally, regular inspections of maple trees can help detect any signs of infestations early on and allow for quick treatment before more serious damage occurs. It is also important to avoid transporting firewood or other wood materials from one area to another as this can spread emerald ash borers over long distances very quickly.

By taking these steps and being vigilant about monitoring your maple trees for signs of emerald ash borers, you can help protect your trees from this destructive pest and keep your landscape looking its best.

Preventing an Infestation of the Ash Borer in Maple Trees

The emerald ash borer is an invasive insect that has been destroying ash trees across North America since 2002. The ash borer can also attack maple trees, so it is important to take steps to prevent an infestation. Proper tree care and maintenance can go a long way in keeping your maple trees healthy and free of the ash borer.

First, assess the health of your maple trees. If they appear weak or unhealthy, take steps to improve their condition. This could include pruning dead or damaged branches, fertilizing, and watering during dry periods. Keeping your maple trees healthy will help them better resist an infestation of the ash borer.

Next, inspect your maple trees for signs of an emerald ash borer infestation. Look for small D-shaped exit holes in the bark and signs of unusual woodpecker activity at the base of the tree. If you find evidence of an infestation, contact a professional arborist for advice on how to best address it.

Another important step is to regularly inspect nearby ash trees for signs of infestation by the emerald ash borer. If you see evidence that an ash tree has been infected by this pest, take steps to prevent it from spreading to your nearby maple trees. You may need to consider removing any infected ash trees on your property as soon as possible.

Finally, consider using pest control products specifically designed to target the emerald ash borer when planting new maple trees or treating existing ones. These products can help protect against infestations and keep your maple trees healthy for years to come.

Natural Predators of the Ash Borer

The emerald ash borer (EAB) is an invasive insect that has caused significant damage to ash trees in North America. To help control this pest, researchers are looking to natural predators to help reduce the population of EAB.

Several species of parasitic wasps have been identified as potential predators of EAB. These wasps lay their eggs inside the larvae of EAB, killing them in the process. Other predatory insects, such as ground beetles and ladybugs, have also been shown to feed on EAB larvae.

Birds are also known to prey on adult EAB beetles, helping to reduce their numbers and prevent further damage to ash trees. The woodpeckers are particularly adept at finding and eating adult beetles, while other birds such as chickadees and blue jays also hunt for them.

Parasitoid flies have also been identified as potential predators of EAB. These flies lay their eggs on the outside of the beetle’s body and then their larvae burrow into the beetle’s body where they feed on its internal organs. This kills the beetle within a few days or weeks.

Other natural predators include spiders, mites and lace bugs which all feed on adult or larval stages of EAB. Finally, fungi can be used as a biological control agent against EAB by attacking both adults and larvae directly or by producing toxins that kill them indirectly.

By introducing these natural predators into areas affected by EAB infestations, it is possible to reduce their numbers significantly and prevent further damage to ash trees in North America.


The emerald ash borer (EAB) is a serious pest of ash trees, but it can also affect other members of the Fraxinus genus, such as maple trees. While EAB larvae don’t feed on maple trees as their primary food source, they will consume sapwood and cambium if they are present on the tree. Adult beetles may lay eggs on maple trees, and larvae may feed on the sapwood and cambium if available. Therefore, even though ash borers don’t actively seek out maple trees as their food source, they can still cause significant damage to them.

It is important for homeowners to be aware of this potential risk and take steps to protect their maple trees from EAB infestations. This includes regularly inspecting trees for signs of damage or infestation, and taking appropriate preventative measures such as insecticides or tree injections to protect the tree from EAB. Additionally, it is important to avoid transporting firewood or other wood products that could be infested with EAB larvae. Taking these precautions can help protect your maple trees from destructive EAB infestations.