How To Get Rid Of Invasive Blackberries

Getting rid of invasive blackberries is possible with persistence, proper timing, and a combination of mechanical and chemical methods.
 
These thorny invaders spread aggressively through underground root systems, so simply cutting them back rarely solves the problem long-term.
 
If you’ve been battling blackberry bushes taking over your garden or pasture, you’re not alone.
 
In this post, we’ll walk through how to get rid of invasive blackberries step by step, from manual removal to chemical control, so you can reclaim your land.
 
Let’s dig in.
 

Why Getting Rid of Invasive Blackberries Takes Real Effort

Getting rid of invasive blackberries is tough because these plants are built to survive.
 
Understanding why they’re so resilient helps you plan a smarter attack.
 

1. They Spread Through Underground Rhizomes

Invasive blackberries don’t just spread by seed.
 
They send out underground stems called rhizomes that pop up new canes several feet away from the parent plant.
 
This means pulling one bush won’t stop the problem if the root system stays intact.
 

2. They Re-Grow From Root Fragments

Even a small piece of root left in the soil can sprout a whole new blackberry plant.
 
This is why getting rid of invasive blackberries requires removing as much of the root mass as possible.
 

3. They Form Dense, Thorny Thickets

Blackberry canes arch and root at the tips, creating impenetrable walls of thorns.
 
These thickets shade out native plants and make access difficult for removal.
 
That’s why timing and technique matter so much when getting rid of blackberry bushes.
 

How to Get Rid of Invasive Blackberries: Step-by-Step Methods

Getting rid of invasive blackberries works best when you combine several approaches.
 
Here are the most effective methods to try.
 

1. Manual Removal for Small Infestations

For small patches, digging out the roots by hand can work.
 
Use a mattock or shovel to loosen the soil around the base.
 
Grab the root crown and pull slowly, working out as much of the root system as you can.
 
Getting rid of invasive blackberries this way is labor-intensive but avoids chemicals.
 

2. Repeated Cutting to Deplete Root Energy

If digging isn’t realistic, cutting can still work over time.
 
Cut canes to the ground every two to three weeks during growing season.
 
Each cut forces the plant to use stored energy to regrow.
 
Eventually, the roots starve and die.
 
This method for getting rid of invasive blackberries takes patience but is effective.
 

3. Mowing and Mulching for Large Areas

For bigger patches, mow blackberries down with a brush cutter.
 
Then cover the area with thick black plastic or heavy mulch.
 
Smothering deprives roots of light and eventually kills them.
 
Getting rid of invasive blackberries this way works best in full sun.
 

4. Herbicide Application for Stubborn Roots

When manual methods fall short, herbicides containing glyphosate or triclopyr can help.
 
Apply to freshly cut stumps or spray foliage when plants are actively growing.
 
Fall is often the best time since plants pull nutrients into roots.
 
Getting rid of invasive blackberries with herbicide requires care to avoid harming nearby plants.
 
Always follow label instructions and check local regulations.
 

Preventing Invasive Blackberries From Coming Back

Getting rid of invasive blackberries isn’t a one-time job.
 
You’ll need to monitor the area for new shoots.
 
Remove any regrowth immediately before it establishes.
 
Plant native ground covers to shade out blackberry seeds.
 
Regular maintenance keeps blackberries from returning.
 

So, How Do You Get Rid of Invasive Blackberries?

Getting rid of invasive blackberries takes persistence and a mix of methods.
 
Dig out roots for small patches, cut repeatedly to starve larger ones, smother with mulch or plastic, and use herbicide when needed.
 
Stay consistent and you’ll win the battle against blackberry bushes.