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To get rid of asparagus fern in the garden, you have to be more stubborn than the plant itself.
Asparagus fern looks soft and innocent, but it spreads through underground tubers and berries that can keep coming back for years.
If you’ve been asking how to get rid of asparagus fern without turning your whole garden upside down, the answer is a mix of digging, smothering, and repeated follow-ups.
You can get rid of asparagus fern in the garden by removing the roots, blocking new growth, and staying consistent until the tuber bank is finally exhausted.
In this post, we’ll look at why asparagus fern is so hard to remove, the best ways to kill asparagus fern, and how to keep it from creeping back.
Let’s dig in.
Why Asparagus Fern Keeps Coming Back
Asparagus fern is tough because it doesn’t depend on just one survival trick.
It has tuberous roots, hidden berries, and feathery stems that can resprout after what looks like a clean removal.
That’s why trying to get rid of asparagus fern by pulling the top growth alone almost never works.
1. Underground Tubers Store Energy
The biggest reason asparagus fern comes back is its underground tubers.
These little storage organs hold enough energy to push up new shoots even after you’ve pulled every visible stem.
If any tuber is left behind, it can restart the whole plant.
So when you get rid of asparagus fern, you have to remove as much of the tuber mass as possible.
2. Berries Spread New Plants
Asparagus fern also produces berries that can drop into the soil or get moved by birds.
Each berry can lead to a new patch, which is why one small clump can become a full invasion.
Bag the berries and discard them instead of tossing them on the ground.
That alone can make a big difference when you’re trying to get rid of asparagus fern in the garden.
3. It Loves Disturbed Soil
This plant is opportunistic.
If you dig an area and leave bare soil, asparagus fern can move right in.
That’s why removal and replanting often go hand in hand.
You can get rid of asparagus fern more easily when you give something else the space to grow.
How to Get Rid of Asparagus Fern in the Garden
The best method depends on how much asparagus fern you’re dealing with.
For small patches, hand digging works well.
For larger areas, smothering or repeated cutting may be more practical.
1. Dig Out the Tubers by Hand
Start by watering the soil a day before you dig.
Soft soil makes it easier to lift the roots without breaking them.
Use a digging fork and work around the clump, then lift the whole root ball.
Sift through the soil with your hands and remove every tuber you can find.
This is the most direct way to get rid of asparagus fern, especially in garden beds.
2. Smother the Area with Cardboard or Mulch
If digging isn’t possible, smothering can weaken asparagus fern over time.
Lay down cardboard or several layers of newspaper, then cover with mulch or compost.
The lack of light stops new shoots from growing.
But don’t expect a quick kill.
You may need to keep the area covered for several months to get rid of asparagus fern completely.
3. Cut Repeatedly to Starve the Roots
Another option is to cut the stems back to the ground as soon as they appear.
Every time you remove the top growth, the plant uses stored energy to try again.
If you keep cutting before the leaves can feed the roots, the tubers eventually run out of fuel.
This is slow, but it can help you get rid of asparagus fern without digging up the whole garden.
4. Use Herbicides Carefully If Needed
For severe infestations, some gardeners use a systemic herbicide.
Apply it to actively growing leaves and let it move down into the tubers.
Always follow label directions and protect nearby plants.
If you use herbicide, it should be part of a larger plan to get rid of asparagus fern, not the only step.
5. Replant the Bare Spot
Once the asparagus fern is gone, don’t leave the soil bare.
Plant a ground cover, ornamental grass, or shrubs that can outcompete new seedlings.
A thick, healthy planting makes it much harder for asparagus fern to return.
That’s a key part of getting rid of asparagus fern for good.
Mistakes to Avoid When Removing Asparagus Fern
One common mistake is pulling the stems and walking away.
The tubers stay behind and new growth appears within weeks.
Another mistake is composting the roots or berries.
They can survive the pile and spread when you use the compost later.
And don’t stop checking too soon.
Asparagus fern can resprout from tiny leftovers, so monitor the area for months.
So, How Do You Get Rid of Asparagus Fern in the Garden?
You get rid of asparagus fern in the garden by removing the tubers, blocking light, cutting new growth, and staying patient.
You can get rid of asparagus fern with hand digging for small patches, smothering for larger areas, or careful herbicide use for stubborn infestations.
The key is to keep at it until the roots have nothing left to push up.
Once the area is clear, replant it so the asparagus fern has no open door to return.