If you’ve got buckthorn on your property, fall is the ideal time to deal with it. This invasive shrub crowds out native plants, degrades wildlife habitat, and spreads aggressively through bird-dispersed berries. Here’s why November is prime time for removal and how to do it effectively.
Why Fall Is Ideal for Buckthorn Removal
Easy identification: Buckthorn is one of the last plants to hold its green leaves in fall. When everything else has dropped its foliage, buckthorn stands out like a sore thumb.
Herbicide effectiveness: In fall, plants are pulling nutrients down into their roots for winter storage. Herbicide applied to fresh cuts gets carried deep into the root system, giving you a much better kill rate.
Less collateral damage: Native plants are dormant, so there’s less risk of accidentally harming desirable species during removal.
Frozen ground access: As the ground firms up in late fall, you can get equipment into areas that would be too wet or soft earlier in the year.
How to Remove Buckthorn: 5 Steps
Identify and Map
Walk your property and mark the buckthorn. Look for shrubs and small trees with dark berries, glossy green leaves still hanging in November, and a distinctive dark bark. Note the size and density so you can plan your approach.
Cut the Stems
For small plants (under 1″ diameter), hand-pull when the soil is moist — try to get the roots. For larger plants, use loppers, a brush saw, or a chainsaw to cut stems as close to the ground as possible.
Treat the Stump Immediately
Within 15 minutes of cutting, apply a triclopyr-based herbicide (like Garlon 4 or a brush killer concentrate) directly to the fresh-cut stump surface. The freshly exposed wood absorbs the herbicide and carries it into the root system. If you wait too long, the cut surface dries and seals over.
Dispose of Cut Material
Pile cut brush and let it dry out, then burn it if local ordinances allow. Do NOT put berry-laden branches in your compost — the berries can remain viable and spread. Bag any berries or fruiting branches and dispose of them with your trash.
Plan for Follow-Up
Buckthorn is persistent. Check treated stumps in spring and summer for regrowth and re-treat as needed. Seedlings will appear for several years from the existing seed bank in the soil. Plan to do a walk-through each fall to catch new growth early.
Important Considerations
⚠️ Herbicide Safety: Always wear gloves, eye protection, and long sleeves when handling herbicides. Follow the product label instructions carefully — it’s the law. Apply on calm, dry days to prevent drift to non-target plants. Keep herbicides away from waterways, wetlands, and storm drains.
⚠️ Check Local Regulations: Some municipalities and counties have specific rules about herbicide use, burning brush, and invasive species management. Your county extension office or local DNR can provide guidance on best practices and any permits you may need. Minnesota and Wisconsin both have resources specifically for buckthorn management.