Dead Ash Tree Removal Ohio: Dealing with Emerald Ash Borer Damage

Drive any back road in southern Ohio and you'll see them. Gray skeletons standing 40, 50, 60 feet tall with no bark left. Branches snapped off and scattered underneath. Some leaning at bad angles toward houses, fences, or power lines.

These are ash trees killed by emerald ash borer (EAB), and Ohio has more of them than almost any other state. The Ohio Department of Natural Resources estimates that EAB has killed over 100 million ash trees statewide. In some woodlots, ash made up 20 to 30 percent of the canopy. Now those trees are dead, and they're falling down.

The problem isn't just cosmetic. Dead ash trees are genuinely dangerous, and they get worse every year they stand. Here's the full picture for Ohio property owners.

What Emerald Ash Borer Did to Ohio

Emerald ash borer is a metallic green beetle about half an inch long. It's native to Asia. It was first detected in Michigan in 2002 and reached Ohio by 2003. By 2010, it had spread to every county in the state.

The beetle's larvae feed on the inner bark of ash trees, creating winding tunnels that cut off the tree's ability to move water and nutrients. An infested tree typically dies within three to five years. There is no natural predator in North America that controls the beetle effectively, though researchers have released some parasitoid wasps that slow the spread.

Ohio had an enormous ash tree population. Green ash and white ash were everywhere because they grow fast, tolerate poor soil, and cities planted millions of them along streets after Dutch elm disease wiped out the elms in the 1960s and 70s. The result was another monoculture, and EAB exploited it.

Most untreated ash trees in Greater Cincinnati have been dead for five to ten years now. That matters because the longer a dead ash stands, the more dangerous it gets.

How to Identify Dead Ash Trees on Your Property

If you're not sure whether a tree is an ash, here's what to look for.

Compound leaves with five to nine leaflets. Ash leaves have a distinctive pattern where leaflets grow in pairs along a stem with one leaflet at the tip. But dead trees won't have leaves, so you'll need other clues.

Opposite branching. Ash branches grow directly across from each other on the trunk, not staggered. Only a few Ohio trees do this. If you see opposite branching on a dead tree, it's probably ash.

Diamond-pattern bark on mature trees. White ash bark has a distinctive diamond or interlocking ridge pattern. On dead trees, this bark is often loose, peeling, or missing entirely.

Signs of Emerald Ash Borer Specifically

D-shaped exit holes. These are about an eighth of an inch across and shaped like a capital D. They're left by adult beetles emerging from the trunk. If you peel loose bark off a dead ash, you'll see dozens of them.

S-shaped larval galleries. Under the bark, you'll find winding, S-shaped tunnels packed with sawdust-like material called frass. These tunnels are what killed the tree.

Woodpecker damage. Woodpeckers love EAB larvae. Heavy woodpecker activity on an ash tree, especially large patches where the outer bark has been stripped off, is a strong indicator of infestation.

Epicormic sprouting. Dying ash trees often push out clusters of small shoots along the trunk and lower branches. The tree is trying to grow new leaves below the damaged area. On dead trees, these sprouts are also dead.

Crown dieback. EAB kills from the top down. You'll see the upper third of the canopy dead first, then the middle, then the lower branches. By the time the whole crown is bare, the tree has been dead for at least a year.

Why Dead Ash Trees Are So Dangerous

All dead trees eventually fall. But ash trees fall apart differently than most species, and they do it faster.

Ash wood gets brittle fast. Within two to three years of dying, ash wood loses its flexibility. Live ash is strong and springy, which is why it's used for baseball bats and tool handles. Dead ash becomes rigid and snaps instead of bending. Branches don't sag and give warning. They just break.

Roots rot quickly. Ash root systems deteriorate fast after the tree dies. A dead oak might stand for 15 to 20 years because oak heartwood resists decay. Dead ash trees lose root integrity in five to eight years, and strong wind can push the entire tree over without warning.

The "widow maker" problem. Dead ash branches hanging in the canopy are called widow makers by arborists. They're unpredictable. A branch that's been hanging for two years can fall on a calm, windless day because the wood finally failed at the attachment point. You can't predict when it'll go.

They're harder to remove the longer you wait. A freshly dead ash is structurally sound enough for a climber or bucket truck to work on safely. A five-year-dead ash is too brittle for a climber and too unpredictable for bucket truck work. At that point, the only safe approach is felling from the ground or using heavy equipment.

Who's Responsible for Dead Ash Trees?

In Ohio, the property owner is responsible for trees on their property. If a dead ash on your land falls and damages a neighbor's house, fence, or car, your homeowner's insurance may or may not cover it depending on whether the insurer considers you negligent for not removing a known hazard.

Many insurance companies in Ohio have started asking about dead trees during policy renewals. Some have denied claims for damage caused by dead trees that the owner knew about and didn't remove. The argument is straightforward: if you know a dead tree is a hazard and do nothing, that's negligence.

Municipalities handle street trees differently. Cincinnati, for example, has removed thousands of dead ash trees from public rights-of-way. But if the tree is on your side of the property line, it's your responsibility regardless of what killed it.

Removal Options for Dead Ash Trees

Traditional Tree Removal (Individual Trees)

For one or two dead ash trees near a structure, traditional tree removal with a crew, chipper, and sometimes a crane is the standard approach. An arborist fells the tree in sections, chips the branches, and hauls everything away.

Cost: $500 to $2,500 per tree depending on size, access, and proximity to structures. A 60-foot dead ash hanging over a house will run toward the high end. A 30-foot ash in an open yard is closer to $500.

Pros: Precise control, works in tight spaces, stump can be ground immediately.

Cons: Expensive per tree, slow if you have many dead ash, dangerous work on brittle wood.

Forestry Mulching (Multiple Trees and Brush)

When a property has five, ten, or fifty dead ash trees scattered through the woods along with all the honeysuckle and invasive brush that filled in after the canopy died, forestry mulching is usually the right call.

A forestry mulcher grinds standing dead trees, brush, and small-diameter wood into mulch in a single pass. For dead ash under about 12 inches in diameter, the mulcher handles them directly. Larger dead ash get felled first with a chainsaw, then the mulcher processes them on the ground.

Cost: $2,500 to $4,500 per acre depending on density. This includes all the dead ash plus the brush, honeysuckle, and other junk trees that moved in.

Pros: Handles everything at once, much cheaper per tree than individual removal, leaves the ground mulched and clean, no hauling.

Cons: Can't work right next to structures (need 10 to 15 feet of clearance), requires equipment access.

The Combined Approach

Most properties we clear use both methods. An arborist drops the big dead ash near the house. Then we come in with the mulcher and clear everything else. The arborist handles the precision work, and we handle the volume work. It's faster and cheaper than using either method alone.

What Happens After the Ash Trees Are Gone

When ash trees die, something else moves in. In Ohio, that something is usually honeysuckle.

Ash trees created dense shade. When they died, sunlight hit the forest floor for the first time in decades. Bush honeysuckle, which was already present as an understory plant, exploded. Walk through any Cincinnati woodlot where ash trees died and you'll find six to eight feet of solid honeysuckle. The dead ash skeletons stick up above a sea of green invasive brush.

This is why forestry mulching makes sense for most EAB-affected properties. You're not just dealing with dead trees. You're dealing with dead trees plus a massive invasive plant problem that sprouted up underneath them. A mulcher handles both in the same pass.

After clearing, the next question is what to plant. The honest answer for many properties is nothing. If you mulch the dead ash and honeysuckle, native grasses, wildflowers, and seedlings from surviving trees will fill in naturally. Ohio soil has a robust seed bank. Give it sunlight and time and you'll see goldenrod, blackberry, pokeweed, and eventually oak, hickory, and walnut seedlings within a year or two.

If you want to speed things up or control what grows, plant a mix of native hardwoods that aren't susceptible to any current pest or disease. Good choices for southern Ohio include:

• White oak - Long-lived, rot-resistant, great wildlife value
• Bur oak - Tolerates wet and dry soils, massive and long-lived
• Swamp white oak - Handles the wet clay soils common in Cincinnati
• Tulip poplar - Fast growing, tall, excellent shade tree
• Kentucky coffeetree - Tough, pest-resistant, underused
• Black walnut - Valuable timber tree (just don't plant near gardens)

Mix species. The whole reason EAB was so devastating is that we had too many of one kind of tree. Plant four or five different species and you won't lose them all to the next bug.

Dead Ash Removal Costs in Greater Cincinnati

One thing worth noting: dead ash removal costs more than live tree removal. The wood is unpredictable. A climber can't trust that a dead branch will hold their weight. Sections can break during felling in ways that live wood wouldn't. Insurance costs for arborists removing dead trees are higher. All of that gets passed on.

This is another reason not to wait. The longer a dead ash stands, the more it costs to remove because the work becomes more dangerous and requires more specialized equipment.

Can Any Ash Trees Be Saved?

Short answer: only the ones that still have a canopy.

The treatment is a trunk injection of emamectin benzoate, sold commercially as TREE-age or similar products. It's injected into the base of the tree and carried through the vascular system, killing EAB larvae that feed on the inner bark. Treatment costs $100 to $300 per tree depending on diameter and needs to be repeated every two to three years.

The catch is that the tree needs a functioning vascular system to distribute the chemical. If more than 50 percent of the canopy is dead, the vascular system is too damaged. Treatment won't work. Most ash trees in Ohio passed that threshold years ago.

If you have a healthy-looking ash that you want to protect, call a certified arborist for an assessment. Treatment is cost-effective for specimen trees, shade trees near houses, or trees with high personal value. For random ash trees in a woodlot, treatment usually doesn't make financial sense.

The Liability Clock Is Ticking

Every spring we get calls from property owners after a dead ash fell during a storm. Sometimes it hit a fence. Sometimes it blocked a driveway for days. A few times it's gone through a roof.

The ones that bother us are the close calls. A dead ash drops a 200-pound branch on a swing set at three in the afternoon. Nobody was playing on it. A dead trunk falls across a walking trail at a park. Nobody was walking. Luck runs out eventually.

Ohio courts have consistently held that property owners have a duty to address known hazards. A dead 50-foot tree leaning toward your neighbor's property is a known hazard. If you've seen it, your neighbor has seen it, and your insurance company has seen it, there's no claiming ignorance when it falls.

The practical advice: walk your property this spring. Identify any dead ash within falling distance of a structure, driveway, fence, power line, or walkway. Get those trees dealt with before the summer storm season.

Cincinnati-Area Properties Hit Hardest

Some areas of Greater Cincinnati had higher ash concentrations than others, and those areas got hit hardest by EAB.

Warren County (Loveland, Mason, Lebanon). Rural parcels that were formerly agricultural with ash growing along fence rows and in woodlots. Many properties have 10 to 20 dead ash trees scattered through 3 to 5 acre lots.

Clermont County (Milford, Batavia, Goshen). Heavily forested properties where ash was a major canopy component. Some woodlots lost a quarter of their trees to EAB. The resulting honeysuckle invasion is intense.

Hamilton County suburbs (Indian Hill, Anderson Township, Mt. Washington). Mature street trees and yard trees. Many homeowners treated individual specimen trees, but untreated trees in woodlots behind subdivisions are dead and falling.

Butler County (Liberty Township, West Chester). Development-era neighborhoods planted with green ash as street trees. Many communities have dealt with the street trees but properties still have dead ash in wooded areas.

What We See on Every Job

On nearly every clearing project we do in Greater Cincinnati, we encounter dead ash. It's that widespread. A property owner calls about honeysuckle or wants to clear land for a building project, and when we walk the site there are dead ash trees scattered through it.

We handle them as part of the overall clearing. The mulcher takes down dead ash up to about 12 inches in diameter. Bigger ones get dropped with a saw first. Either way, they get processed into mulch along with everything else. No separate tree removal bill, no haul-away charges, no stumps left behind.

For most property owners, this is the most cost-effective path. You solve the dead tree problem and the invasive brush problem in the same project. The alternative is paying an arborist $1,000 per tree for the ash, then still needing to deal with all the honeysuckle underneath.

Related Articles