How to Get Rid of Autumn Olive in Michigan

Quick Answer

To get rid of autumn olive in Michigan for good, you have to kill the roots, not just cut the top. The two methods that work are cut-stump herbicide treatment on scattered plants and a mechanical knockdown followed by treating the regrowth on thick stands. Mowing or cutting alone makes it worse — it resprouts thicker. The best window for spraying is late summer through early fall. For a field full of it, forestry mulching clears the stand in one pass, then you spray the tender resprouts the next season.

What is autumn olive, and why is it a problem here?

Autumn olive (Elaeagnus umbellata) is a fast-growing shrub that was brought into Michigan decades ago and never left. From the 1950s into the 1970s it was handed out and planted on purpose for wildlife food and erosion control. Nobody at the time understood how aggressively it would spread. It turned out to love our sandy West Michigan soils, and now it is one of the most common invasive shrubs you will find on a neglected parcel anywhere from the lakeshore inland to Newaygo and Mecosta counties.

What makes it such a headache is the combination of three things. It fixes its own nitrogen, so it grows on poor ground where little else competes. A single mature shrub throws thousands of small red berries every fall, and birds carry the seed for miles and drop it along fence lines and field edges. And once it takes hold, it grows into a dense, thorny thicket eight to fifteen feet tall that shades out the grasses, oaks, and native shrubs you actually want. On the old orchard ground and abandoned fields around Hart, Shelby, and New Era, I have walked parcels where autumn olive has swallowed an acre so completely you cannot push through it on foot.

How do you identify autumn olive?

Before you spend money clearing anything, make sure you are actually looking at autumn olive and not a native shrub. It is easy to spot once you know the tells:

• Silvery leaf undersides. The top of the leaf is dull green, but flip it over and the underside is silver and slightly scaly. This is the giveaway in any season the leaves are out.
• Yellow spring flowers. In May the shrubs are covered in small, pale-yellow, sweet-smelling flowers. You will smell a thicket before you see it.
• Red speckled berries. By September and October the branches are loaded with small red berries flecked with silver dots. The birds strip them fast.
• Thorny, multi-stem growth. It grows as a sprawling, branchy shrub with short thorns rather than a single clean trunk, often arching out over a fence line or two-track.

If you are still not sure, the Midwest Invasive Species Information Network and your county conservation district can both confirm an ID. It is worth getting right, because the removal plan for a true invasive thicket is different from clearing native brush.

Why is autumn olive so hard to kill?

Most people try the obvious thing first: they cut it down or run a brush mower through it. A month later it looks worse than when they started. That is not bad luck — it is how the plant is built. When you cut autumn olive without treating the stump, the root crown reacts by pushing up a ring of vigorous new shoots. One stem becomes ten, and the new growth is denser and harder to work through than the original.

On top of that, the ground around an established stand is full of seed. Even after you deal with the mature shrubs, that seed bank keeps germinating for years. This is why getting rid of autumn olive is never a one-and-done job. You knock down what is there, kill the roots so it cannot resprout, and then keep an eye on the seedlings that come up afterward. Anyone who tells you a single pass with any method makes it gone forever has not fought it in West Michigan soil.

How to get rid of autumn olive: methods that work

The right method depends on how much you have and how big it is. Here are the approaches that hold up, from a single shrub up to a field that has been taken over.

Cut-stump herbicide treatment (scattered plants)

For a handful of shrubs along a fence line or scattered through a field, cut each stem close to the ground and paint the fresh cut surface with a concentrated herbicide — triclopyr or glyphosate products are the common choices — within a few minutes, before the cut seals over. This puts the chemical straight into the root system and stops the resprouting before it starts. Always read and follow the product label, and if you are near water or a wetland, check the rules first.

Foliar spray (small to medium regrowth)

Spraying the leaves works best on shorter regrowth and seedlings, not on a fifteen-foot mature shrub you cannot reach. Timing matters more than anything: late summer into early fall is the sweet spot because the plant is pulling sugars down into its roots for winter and drags the herbicide along with them. A spring spray looks like it worked and then the plant shrugs it off.

Forestry mulching (thick stands and full fields)

When autumn olive has taken over a half-acre or more and grown into a wall, no amount of hand-cutting is realistic. This is where mechanical clearing earns its keep. Our forestry mulching service grinds a mature stand down to a layer of chips in a single pass, so you go from impassable thicket to open, walkable ground in an afternoon. Mulching does not kill the roots by itself, which is the honest catch, but it resets the site completely and makes the follow-up treatment cheap and easy. For a broader look at reclaiming a neglected parcel, our guide on brush clearing in West Michigan walks through the whole process.

Hand-pulling (seedlings only)

Small seedlings under a couple of feet tall can be pulled by the roots when the ground is soft after a rain. This is the cheapest tool you have, and it is the one most people skip. Staying on top of seedlings for a few seasons after a big clearing is what actually keeps the field clean.

The approach that actually keeps it gone

For most landowners dealing with a real autumn olive problem, the winning play is a one-two punch: knock it down mechanically, then treat what comes back. Here is how that looks on a typical West Michigan field:

• Year one, clear it. Mulch the whole stand on firm or frozen ground so you are working with a clean, open site instead of a thicket.
• The next season, treat the regrowth. The stumps will push fresh shoots in spring. That tender, low regrowth is far easier and cheaper to spray than the original shrubs ever were. Hit it in late summer for the best kill.
• After that, stay on the seedlings. Walk the ground once or twice a year and pull or spot-spray the new seedlings before they get established.

Trying to skip the mechanical step and fight a mature thicket chemically usually costs more in time and product than it would to mulch it and start clean. And if your goal is to turn that reclaimed ground into something useful — a food plot, pasture, or open habitat — clearing the autumn olive first is the step everything else depends on.

When is the best time to tackle it in Michigan?

Timing changes depending on which method you are using, and getting it right is the difference between a kill and a comeback:

• Mechanical clearing — late fall through early spring. Firm or frozen ground carries the equipment cleanly and leaves no ruts. The leaves are also down, so we can see exactly what we are cutting.
• Foliar spraying — late summer into early fall. The plant is moving resources to its roots, so the herbicide travels where it needs to go.
• Cut-stump treatment — most of the year. This works in nearly every season except heavy spring sap flow, which makes the dormant months a good time to chip away at scattered plants.

In practice, that means a lot of our autumn olive jobs across Oceana County and the surrounding area get mulched over winter, with the landowner handling herbicide on the regrowth the following summer. It lines up well with how the seasons work here.

What does clearing autumn olive cost?

A mulching pass on autumn olive prices like medium-density brush in our area — most jobs land in the $1,000 to $1,800 per acre range, with scattered shrubs along an edge costing less and a wall-to-wall thicket on a long-neglected field costing more. Access, density, and how much you want left standing all move the number. If you want to understand the full picture, our forestry mulching cost guide breaks down per-acre and per-hour pricing in detail.

We are based in New Era and clear autumn olive and other brush across Oceana, Mason, Muskegon, Newaygo, and the surrounding counties. If you have a field or fence line that has disappeared under it, the fastest way to a real number is to have Aaron walk the property with you. Reach out through our contact page or call (231) 638-8967. Estimates inside our regular service area are free.

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