Buckthorn Removal in Wisconsin & Eastern Minnesota
Aspen Land Management provides mechanical buckthorn clearing for overgrown acreage, woodland understory, property edges and other machine-accessible areas across Western Wisconsin and Eastern Minnesota. Forestry mulching can remove standing buckthorn vegetation efficiently, while long-term control depends on regrowth, seed sources and follow-up management.
The distinction that matters most
Removing standing buckthorn is not the same as eradicating buckthorn
Mechanical treatment can remove standing buckthorn vegetation, but buckthorn may resprout and viable seed may remain in the soil. Follow-up monitoring and management are often part of long-term control.
This is the first thing on the page rather than the last, because it is the thing most likely to cause a disappointed landowner. Aspen sells a mechanical service that changes what is standing on your property. It does not sell biological eradication, and no honest contractor with a mulching machine can.
The Minnesota DNR puts the follow-up point plainly in its own buckthorn guidance: with no follow-up control, buckthorn will come back. That is not a reason to avoid mechanical clearing. It is a reason to plan for what comes after it.
What mechanical removal does
- Removes and reduces standing woody buckthorn growth to the agreed limits
- Opens access to ground that was impassable
- Reduces dense above-ground growth and the current standing seed source
- Processes woody material onsite rather than piling or hauling it
- Makes future monitoring and follow-up work physically possible
- Gives you a visible, walkable starting point for a management plan
What it does not automatically do
- Remove every root
- Remove every seed already in the soil
- Prevent seed introduction from neighbouring untreated ground
- Prevent every resprout from a cut stem
- Establish native vegetation
- Replace follow-up monitoring
- Guarantee permanent control
How buckthorn work actually goes
Four stages, not one job
Landowners who are happy two years later are almost always the ones who understood the sequence before the machine arrived.
STAGE 01
Identify
Confirm what you actually have, common or glossy buckthorn or something else, and where the boundaries of the problem sit.
STAGE 02
Reduce standing growth
Mechanical clearing of standing woody vegetation to defined limits, where equipment access and site conditions allow. This is Aspen scope.
STAGE 03
Monitor
Walk the treated area and the untreated edges. Look for resprouts and new seedlings. This is where the outcome is actually decided.
STAGE 04
Manage follow-up
Decide what the site needs next, which may include repeat mechanical treatment, planting objectives, or licensed herbicide work by others.
Aspen performs stage two, and can advise on what stages three and four typically involve. Stages three and four belong to the landowner and, where a management plan calls for it, to other qualified professionals.
The species
What buckthorn is, and why landowners notice it
Two non-native shrubs account for nearly all the buckthorn calls we get in this region: common buckthorn and glossy buckthorn. Both were introduced as ornamental and hedge plants, and both now behave in a way no landowner asked for.
People rarely call about buckthorn because they identified a species. They call because a woodlot they used to walk through has closed in, an understory that had wildflowers now has a wall of stems, a fence line has vanished, or a field edge is advancing on the field.
The Minnesota DNR describes buckthorn as degrading forests, wetlands, prairies and other natural habitats, and forming an impenetrable layer of vegetation. The Wisconsin DNR notes that glossy buckthorn in particular can form dense, even-aged thickets that reduce light for understory species and prevent native tree regeneration.
Both species produce abundant fruit that birds and mammals move around, which is why buckthorn does not respect property lines and why a neighbouring untreated stand matters to your project.
Identification
How to recognise buckthorn
The traits below come from the Wisconsin DNR and Minnesota DNR species pages. They are a starting point for narrowing things down, not a substitute for confirmation on the ground.
Common buckthorn
Rhamnus cathartica
Glossy buckthorn
Frangula alnus
Credibility, not fine print
Why one cut is not always the end
If you have cleared buckthorn before and watched it come back, this section explains what happened. It is also why our scope language is worded the way it is.
Recurrence after a mechanical treatment can come from several directions at once, and they are not all within any contractor control:
- Resprouting from cut stems and stumps. The Minnesota DNR guidance is explicit that larger buckthorn is best controlled by cutting the stem and then covering or treating the stump to prevent re-sprouting. Mechanical processing alone does not do that.
- Seed already in the soil. The Minnesota DNR states that most viable common buckthorn seeds in the soil germinate within two years, and that glossy buckthorn seeds remain viable for two to three years in the soil. Clearing the standing plants does not remove that.
- Seed from nearby plants. A treated area next to an untreated stand is a treated area receiving new seed.
- Untreated neighbouring ground. Buckthorn does not observe the property line you asked us to work to.
- Birds and wildlife. Both agencies describe fruit being dispersed by birds and mammals, which is how it arrives somewhere it was not before.
- Changed growing conditions. Opening a closed canopy changes light and moisture at ground level, and seedlings of many species, desirable and not, respond to that.
The work Aspen does
Mechanical buckthorn removal with forestry mulching
Aspen may use forestry-mulching equipment to mechanically process standing buckthorn and other woody vegetation in place. A rotating drum cuts and processes the material, leaving it on the surface rather than in piles that then have to be burned, chipped or trucked away.
On a buckthorn job that matters for a practical reason. Dense buckthorn produces an enormous volume of stems for the acreage involved, and conventional clearing turns that volume into a disposal problem the day after you solve the vegetation problem.
Whether the method fits your property is a site question, not a marketing one. See the forestry mulching page for equipment detail and stem size limits.
Mechanical treatment is considered where:
- Stem size fits the equipment in use
- Terrain is suitable for machine operation
- Ground conditions support machine access
- Clearing boundaries are defined
- Infrastructure and hazards on site are understood
Processed woody material generally remains onsite as surface residue.
What forestry mulching does on a buckthorn site
- Removes and reduces standing woody vegetation
- Opens access into ground that was impassable
- Reduces dense above-ground growth
- Processes material onsite instead of hauling it out
- Makes future monitoring and follow-up physically possible
Mechanical clearing is one part of long-term management
- It does not remove every root
- It does not remove every seed
- It does not prevent seed arriving from neighbouring land
- It does not prevent every resprout
- It does not establish native vegetation
- It does not replace follow-up monitoring
- It does not guarantee permanent control
The question everyone asks
What about herbicide?
Aspen does not apply herbicide.
Aspen Land Management is not a licensed applicator, does not carry chemical treatment in any scope, and will not quote it. Our work on a buckthorn site is mechanical from start to finish.
Some invasive-species management plans may use follow-up treatment by an appropriately licensed applicator, depending on species, site conditions and management objectives. Whether that is right for your property, at what point in the sequence, and with what product is a question for a licensed applicator or a qualified vegetation-management professional. It is not a question this page should answer, and we will not publish concentrations, products or application procedures.
Chemical follow-up is also not universally required. Some objectives, sites and budgets are served by repeat mechanical treatment and monitoring alone. What matters is deciding the approach before the first pass rather than after it.
Which service you need
Buckthorn removal and brush clearing are not the same request
Brush clearing
- Handles many woody vegetation types at once
- The objective is usually a condition: an edge back, an acre walkable, a fence line visible
- Success is judged on the day the machine leaves
- Mixed native and non-native material
- Broad service page: brush clearing
Buckthorn removal
- Focuses on a specific invasive woody species
- The objective usually extends past the treatment itself
- Success is judged over seasons, not on the finish day
- Carries additional expectations about regrowth and follow-up
- Species-specific page: you are on it
Mechanically, the machine does not know the difference. Practically, the conversation is different, which is why the two live on separate pages rather than one. If your property has mixed overgrowth and buckthorn is only part of it, brush clearing is the better starting point. Ongoing or recurring management is vegetation control.
Where we work on it
Property types
All of these assume machine access. Where equipment cannot safely reach or operate, mechanical clearing is not the right method and we will say so.
Woodland understory
Closed buckthorn understory beneath an existing canopy, where the woodlot has become impassable.
Rural acreage
Back acres and unused ground where buckthorn has taken over at scale.
Field edges
Buckthorn advancing from a wooded edge onto working or open ground.
Property boundaries
Boundary strips where buckthorn has closed in from one side or both.
Fence lines
Fence lines that can no longer be walked, inspected or repaired. Related: fence line clearing.
Trail and access corridors
Trails and access routes closed off by buckthorn growth. Related: trail and access clearing.
Habitat-management areas
Areas where reducing invasive woody growth is part of a broader management objective. Related: habitat improvement.
Commercial and institutional property
Perimeters, buffers and unmaintained ground on commercial and institutional parcels.
Material size
Small buckthorn and large buckthorn are different jobs
Dense multi-stem buckthorn in the size range that forms thickets is generally well suited to mechanical treatment. That is the material most landowners are looking at, and it is where a mulching machine earns its keep: a very large number of small stems processed quickly.
Larger woody stems and mature specimens are a different proposition. Beyond a certain size, material takes longer per stem, reaches the limits of the equipment and attachment in use, and may be better handled by a different method or a different contractor depending on size and site conditions.
We do not publish a universal diameter cutoff, because the honest answer depends on the machine, the attachment, the terrain and how much of the material is at that size. What we will do is look at your stand and tell you plainly which category it falls into.
What we assess on material size
- Typical stem diameter across the stand
- How much of the stand sits at the upper end
- Multi-stem clumps versus single larger stems
- Whether larger specimens are scattered or continuous
- Whether desirable trees are mixed into the stand
- Terrain and access at the locations of the larger material
Ground conditions
Can buckthorn be cleared in wet areas?
Sometimes. It depends on the ground, and it is one of the more common reasons a buckthorn project gets rescheduled rather than cancelled.
Machine access depends on soil moisture, bearing conditions, slope, wetland restrictions and project requirements. Frozen ground in winter changes the answer on many sites that are not workable in June. Saturated ground changes it the other way.
We will not tell you that tracked equipment can work anywhere, because it cannot, and we will not promise zero rutting or zero soil disturbance on any site. Mechanical clearing is equipment operating on ground, and ground responds to it. What we can do is assess the site, tell you what conditions we would need, and schedule against those conditions rather than against a calendar.
This matters more for glossy buckthorn than for common buckthorn, because glossy buckthorn is the species the Wisconsin DNR describes as invading wetlands including bogs, fens and sedge meadows. A glossy buckthorn stand is more likely to sit on ground where access is the constraint.
Before mechanical work begins
Wetland, shoreland and regulated resource context
Buckthorn frequently occurs on properties that also contain wetland, shoreland or other regulated features, and glossy buckthorn in particular is associated with wetland habitats. That combination means a buckthorn project and a regulatory question often arrive together.
Aspen does not determine wetland jurisdiction, does not issue regulatory findings, does not pull permits and does not make eligibility determinations for any funding program. Those questions go to your county land use or zoning office, the relevant state agency, or a qualified consultant. Where a project carries conditions, we need those in writing so the mechanical work can be planned around them.
Nothing on this page should be read as a determination about your property or as advice that a particular project qualifies for any conservation program or funding.
Stage three and four
What happens after mechanical clearing
This is the part of a buckthorn project that decides the outcome, and it is the part that belongs to the landowner rather than the contractor.
Follow-up considerations
- Monitor the treated area for resprouting
- Inspect untreated edges and neighbouring ground
- Identify new seedlings as they appear
- Decide whether repeat mechanical treatment is appropriate
- Consider planting or seeding objectives for the opened ground
- Consult qualified conservation or vegetation professionals where needed
- Licensed herbicide treatment by others, where that is part of the management plan
The Minnesota DNR recommends walking the property at least once a year after buckthorn removal to find and remove new plants, and notes that many sites benefit from replanting desirable species to minimize bare ground that invasive species otherwise colonise.
We do not publish a guaranteed treatment schedule, because sites differ and so do objectives. A woodlot being managed for habitat, a field edge being held back, and an acre being prepared for a building are three different follow-up conversations even if the machine work looked identical.
What we will do at the walkthrough is tell you honestly what we saw, where we expect pressure to come from, and what the realistic maintenance picture looks like.
A claim we will not make
Removing buckthorn does not automatically restore native plants
Reducing buckthorn may create more space and access for future vegetation-management objectives, but native establishment depends on seed sources, soil conditions, competition, moisture, management and follow-up.
Opening a closed understory changes light and moisture at ground level. What responds to that change depends on what is already present in the soil and nearby. On some sites native species do return. On others the opened ground is taken by whatever is most opportunistic, which can include more buckthorn or a different invasive entirely. That is precisely why the Minnesota DNR raises replanting as a way to minimize bare ground.
If native establishment is your actual objective rather than a hoped-for side effect, plan it as its own piece of work with people qualified to design it. Aspen provides the mechanical clearing that makes it physically possible, and links to habitat improvement for the broader context.
The material
What happens to the buckthorn after it is mulched
With forestry mulching, processed woody material generally remains onsite as surface residue. It is not stacked, not burned by us, and not trucked off the property.
Practically, that usually means separate chipping is not necessary and hauling is reduced or avoided for the vegetation portion of the work. The residue breaks down gradually over time.
What we will not tell you is that the residue feeds your soil, improves soil health, prevents erosion or suppresses all regrowth. Those are claims that would need evidence specific to your site, and we do not have it.
- Material processed where it stands
- No burn piles or windrows created by our work
- Separate chipping generally not required
- Hauling reduced or avoided for the vegetation scope
- Residue breaks down gradually
- Aspen does not provide debris haul-off or offsite disposal
If material has to physically leave your property, that needs a contractor with hauling capability and should be scoped and priced separately.
Before we quote
What Aspen reviews on a buckthorn site
The stand
- Common or glossy buckthorn, or species uncertainty
- Density
- Stem size
- Acreage
- Adjacent untreated areas
The ground
- Terrain and slope
- Soil moisture
- Wet areas
- Rock
- Existing debris
- Machine access
The constraints and the goal
- Fences and structures
- Utilities
- Property boundaries
- Desired clearing limits
- Future land-use goal
- Follow-up expectations
Field work
Buckthorn management in Aspen field project
Aspen is running a multi-year field project on a parcel near New Richmond, Wisconsin, which includes vegetation-management planning, documented starting conditions and future monitoring. Invasive woody vegetation is part of what the project tracks.
The project has not demonstrated or proven a buckthorn control method, and no results have been produced yet. It exists so that what happens after treatment gets recorded on a real property over multiple seasons rather than asserted in marketing copy.
- Documented starting site conditions
- Written vegetation-management planning
- Monitoring planned across future seasons
- Open to collaborators and technical partners
- Related: vegetation control
Budgeting
What buckthorn removal costs
Buckthorn-removal pricing varies with acreage, vegetation density, stem size, terrain, access, mobilization, site conditions and desired finished condition.
Aspen provides project-specific pricing after reviewing the property and scope. We do not publish a buckthorn rate, because a light scattered stand on flat open ground and a closed multi-stem thicket on a slope are not the same job even at identical acreage.
Acreage
Total treated area, and whether it is contiguous or scattered.
Density
Scattered stems and a closed thicket are different amounts of machine time.
Stem size
Larger material takes longer per stem and approaches equipment limits.
Terrain
Slope, rock and abrupt grade changes limit approach and slow production.
Access
Getting a machine and trailer to the stand, and moving between areas.
Mobilization
Travel distance and the number of separate mobilisations required.
Site conditions
Ground moisture, wet areas, structures, fences and buried infrastructure.
Selectivity
Working around trees and plantings you want kept takes longer than clearing through.
Finished condition
A rough opening pass and a tighter finish are different amounts of work.
Production
Production varies substantially between light scattered buckthorn, dense multi-stem thickets and sites with larger woody material or difficult access. Aspen does not publish a fixed acres-per-day figure or a fixed completion time for buckthorn work.
Who calls us about buckthorn
Who we work for
- Private landowners
- Rural and acreage owners
- Woodlot owners
- Hunting and recreational landowners
- Lake and river property owners
- Commercial property owners
- Homeowner associations and institutions where scope fits
- Contractors and site contractors
- Conservation and habitat projects
- Land trusts
- Municipal and government primes where scope fits
- Property managers
Aspen may be engaged on conservation, municipal and agency-led projects where the requested mechanical clearing scope matches Aspen equipment and capabilities. Nothing here implies endorsement by, or a formal relationship with, any agency or conservation organization.
Where we work
Buckthorn removal across Wisconsin and Eastern Minnesota
Aspen is based in New Richmond, Wisconsin, in the St. Croix Valley, and provides buckthorn clearing across Western Wisconsin and into Eastern Minnesota where access and scope allow.
Western Wisconsin
Local buckthorn pages: New Richmond WI, Hudson WI and Stillwater MN. See the full service area.
Questions we actually get
Buckthorn removal FAQ
What is the best way to remove buckthorn?
There is no single best way. It depends on the size of the stand, the size of the stems, the terrain, machine access and what you want the ground to do afterwards. Mechanical clearing suits dense stands of smaller multi-stem material on machine-accessible ground. Whatever method is used, the Minnesota DNR is clear that follow-up control matters on all sites, because with no follow-up control buckthorn will come back.
Can forestry mulching remove buckthorn?
Yes, it can remove standing buckthorn vegetation where stem size fits the equipment, terrain is suitable and ground conditions support machine access. It processes the material in place, so there are no piles to burn, chip or haul away. Whether it fits your specific stand is a site question.
Will buckthorn grow back after forestry mulching?
It may. Buckthorn can resprout from cut stems, and viable seed can remain in the soil. The Minnesota DNR states that most viable common buckthorn seeds in the soil germinate within two years, and that glossy buckthorn seed remains viable for two to three years in the soil. Seed also arrives from nearby untreated plants. Plan for monitoring and follow-up rather than assuming one pass is the end.
Does mulching kill buckthorn roots?
No. Mechanical processing removes and reduces standing woody growth above the ground. It does not remove every root, and it is not a stump treatment. The Minnesota DNR guidance describes larger buckthorn as best controlled by cutting the stem and then covering or treating the stump to prevent re-sprouting, which is a separate step Aspen does not perform.
Does forestry mulching destroy buckthorn seeds?
No. Nothing about a mechanical pass removes the seed already in your soil, and we will not claim otherwise. Seed persistence is one of the main reasons follow-up monitoring matters.
Does Aspen apply herbicide?
No. Aspen Land Management does not apply herbicide and is not a licensed applicator. Some invasive-species management plans may use follow-up treatment by an appropriately licensed applicator, depending on species, site conditions and management objectives. That is a conversation for a licensed professional, not for this page.
Can Aspen remove large buckthorn?
Up to a point. Dense multi-stem buckthorn in the size range that forms thickets is generally well suited to mechanical treatment. Larger woody stems and mature specimens take longer per stem, reach the limits of the equipment and attachment in use, and may need a different method or a different contractor depending on size and site conditions. We assess this at the site review rather than publishing a universal cutoff.
Can buckthorn be removed in wet areas?
Sometimes. Machine access depends on soil moisture, bearing conditions, slope, wetland restrictions and project requirements. Frozen winter ground makes some otherwise unworkable sites accessible. We do not claim tracked equipment can work anywhere, and we do not promise zero rutting or zero soil disturbance on any site.
What happens to the buckthorn after it is mulched?
Processed woody material generally remains onsite as surface residue. Separate chipping is usually not necessary and hauling is reduced or avoided for the vegetation scope. The residue breaks down gradually. Aspen does not provide debris haul-off or offsite disposal.
Does buckthorn removal restore native plants?
Not on its own. Reducing buckthorn may create more space and access for future vegetation-management objectives, but native establishment depends on seed sources, soil conditions, competition, moisture, management and follow-up. The Minnesota DNR notes that many sites benefit from replanting desirable species to minimize bare ground that invasive species otherwise colonise.
How much does buckthorn removal cost?
Pricing varies with acreage, vegetation density, stem size, terrain, access, mobilization, site conditions and desired finished condition. Aspen provides project-specific pricing after reviewing the property and scope. General planning ranges published for comparable mechanical clearing work are for orientation only and are not guaranteed Aspen project rates.
How long does buckthorn removal take?
Production varies substantially between light scattered buckthorn, dense multi-stem thickets and sites with larger woody material or difficult access. Aspen does not publish a fixed acres-per-day figure or a fixed completion time. We estimate duration after seeing the site.
Do I need to know whether I have common or glossy buckthorn?
Often not for the mechanical work itself, but sometimes yes for the planning around it. Glossy buckthorn is the species the Wisconsin DNR describes as invading wetlands including bogs, fens and sedge meadows, so a glossy stand is more likely to sit on ground where access is limited or where regulatory questions apply. Where identification changes what you do, confirm it on site with someone qualified rather than from a web page.
Can Aspen clear buckthorn along property lines?
Yes, to owner-defined or project-defined clearing limits. Aspen does not establish or certify legal property boundaries. If the line matters and it is not marked, have it established before we clear to it.
Where does Aspen provide buckthorn removal?
Across Western Wisconsin and into Eastern Minnesota from a base in New Richmond, Wisconsin. That includes St. Croix, Polk, Pierce and Dunn counties in Wisconsin and the eastern metro counties in Minnesota, with travel distance treated as a cost variable rather than a hard boundary.
Keep reading
Related services and resources
Forestry MulchingThe method behind the work, with equipment detail and stem size limits.
Vegetation ControlOngoing and recurring management rather than a single treatment.
Invasive Brush and Small Tree ClearingInvasive woody vegetation clearing across mixed stands.
Habitat ImprovementWhere invasive reduction fits into a broader land management objective.
Land ClearingBroader treatment when the whole parcel needs to change condition.
Site PreparationVegetation and access work ahead of excavation, grading and construction.
Habitat Restoration Field ProjectThe multi-year New Richmond parcel where vegetation work is documented over time.
Next step
Get your buckthorn looked at
Send photos of the stand, tell us roughly how much ground it covers, and say what you want the property to be afterwards. We will tell you what mechanical clearing can realistically do on that site, what it will not do, and what the follow-up picture looks like before you commit to anything.
Aspen Land Management LLC, New Richmond, Wisconsin. Mechanical vegetation clearing and forestry mulching across Western Wisconsin and Eastern Minnesota. Herbicide application, stump treatment, stump removal, debris haul-off, large-tree removal, excavation and grading are outside the current Aspen scope. Mechanical treatment removes standing woody growth; regrowth and long-term control depend on species, site conditions and follow-up management.