Your Cool Home is supported by its readers. Please assume all links are affiliate links. If you purchase something from one of our links, we make a small commission from Amazon. Thank you!
Getting rid of invasive blackberries takes persistence, strategy, and a whole lot of patience.
If you’ve been battling these thorny invaders in your garden or on your property, you already know how stubborn they can be.
The good news is that with the right approach, you can absolutely reclaim your land and stop invasive blackberries from taking over.
In this post, we’ll walk through the most effective methods to get rid of invasive blackberries, from manual removal to chemical control, so you can finally win this fight.
Let’s dig in.
Why Invasive Blackberries Are So Hard to Remove
Invasive blackberries spread aggressively and they don’t give up easily.
1. They Have Deep, Stubborn Root Systems
The main reason invasive blackberries are so difficult to eliminate is their extensive root system.
These plants send out rhizomes that can travel several feet underground, sprouting new canes even when you think you’ve pulled everything up.
That’s why simply cutting the visible canes won’t work; the roots keep the plant alive and coming back.
2. They Spread Through Multiple Methods
Invasive blackberries reproduce through seeds, root suckers, and tip rooting where canes touch the ground and take root.
Birds and animals also spread the seeds, which means new plants can pop up anywhere.
This multi-pronged spreading strategy is why getting rid of invasive blackberries requires a comprehensive plan.
3. They Form Dense, Thorny Thickets
These plants create impenetrable thickets that are painful to navigate and difficult to penetrate.
The thorns can tear through gloves and clothing, making manual removal a physically demanding task.
Plus, the dense growth shades out native plants, giving invasive blackberries an even stronger foothold.
Manual Methods to Get Rid of Invasive Blackberries
If you prefer to avoid chemicals or have a smaller infestation, manual removal can work effectively.
1. Digging Out the Roots
The most thorough manual method for getting rid of invasive blackberries is digging out the entire root system.
Use a sturdy shovel or mattock to loosen the soil around the plant.
Then carefully follow the roots and remove as much of the rhizome network as possible.
This method works best when the soil is moist, making it easier to extract the roots intact.
2. Repeated Cutting
If digging isn’t practical, you can exhaust the plant by repeatedly cutting new growth to the ground.
Every time the canes sprout, cut them back before they can photosynthesize and feed the roots.
This starves the root system over time, but it requires dedication because you’ll need to cut every few weeks during the growing season.
3. Mowing and Mulching
For larger areas, regular mowing can weaken invasive blackberries significantly.
Combine mowing with thick mulching using cardboard or heavy landscape fabric to block sunlight.
This method works well as part of a long-term strategy for getting rid of invasive blackberries, but it won’t eliminate them overnight.
Chemical Control for Invasive Blackberries
When manual methods aren’t enough, herbicides can help you get rid of invasive blackberries more effectively.
1. Choosing the Right Herbicide
Glyphosate and triclopyr are commonly used to kill invasive blackberries.
These herbicides are systemic, meaning they travel down to the roots and kill the entire plant.
Always follow label instructions carefully and choose a product formulated for woody plants and brush.
2. Best Time to Apply
Late summer to early fall is the ideal time to apply herbicides to invasive blackberries.
During this period, the plant is actively transporting nutrients to its roots, which helps the herbicide reach the rhizomes.
Avoid spraying when rain is forecasted, as it can wash the chemicals away before they’re absorbed.
3. Application Techniques
For small patches, use a spot sprayer to target the leaves directly.
For larger infestations, a cut-stem method works well: cut the canes and immediately apply herbicide to the fresh cuts.
This approach minimizes damage to surrounding plants while effectively getting rid of invasive blackberries.
Preventing Invasive Blackberries from Coming Back
Once you’ve removed invasive blackberries, the battle isn’t over.
You need to prevent them from returning.
1. Monitor and Remove New Growth
Check the area regularly for new sprouts and remove them immediately.
Staying on top of regrowth is crucial because invasive blackberries can rebound quickly if left unchecked.
2. Plant Competing Vegetation
Planting native grasses or ground covers can help suppress invasive blackberries by competing for resources.
A healthy, dense cover of desirable plants makes it harder for blackberry seeds to establish.
3. Maintain Your Land
Regular mowing, pruning, and soil management keep your property less hospitable to invasive blackberries.
Consistency is key, so make land maintenance a regular part of your routine.
So, How Do You Get Rid of Invasive Blackberries?
Getting rid of invasive blackberries requires a combination of methods and plenty of persistence.
Whether you choose manual removal, chemical control, or a mix of both, the key is to attack the roots and stay consistent.
With time and effort, you can successfully get rid of invasive blackberries and restore your land.
Stay patient, stay diligent, and you’ll win the battle.