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How to get rid of spreading lily of the valley is a question many gardeners ask because this plant can quickly take over garden spaces if left unchecked.
Getting rid of spreading lily of the valley requires persistent effort, as the plant spreads through underground rhizomes that are tough to control.
In this post, you’ll learn effective strategies on how to get rid of spreading lily of the valley, including physical and chemical methods, plus tips to prevent its return.
Why You Need to Get Rid of Spreading Lily of the Valley
Even though lily of the valley produces fragrant, delicate flowers, its spreading nature can become a big problem.
1. Aggressive Growth Through Rhizomes
Lily of the valley doesn’t just spread by seeds; it aggressively sends out underground rhizomes that create new plants beside the original patch.
This means if you see one plant, many more are likely quietly growing underneath the soil.
2. Outcompetes Other Plants
Because of how fast lily of the valley spreads, it can easily crowd out other desirable plants.
The dense patches block sunlight and nutrients, making it hard for your flowers or vegetables to thrive.
3. Difficult to Control Once Established
If left unchecked, spreading lily of the valley forms a thick mat that is very hard to remove.
Understanding how to get rid of spreading lily of the valley early can save you from this frustration.
How to Get Rid of Spreading Lily of the Valley: Practical Methods
Knowing practical ways on how to get rid of spreading lily of the valley is key for regaining control of your garden.
1. Manual Removal by Digging
One of the most straightforward ways to get rid of spreading lily of the valley is by digging it out.
Use a shovel to carefully lift the plants, making sure to dig deep enough to capture the rhizomes.
Because the roots spread horizontally, you’ll need to dig a good area beyond the visible leaves to attempt complete removal.
Manual digging is labor-intensive but effective when done thoroughly.
2. Regular Pulling of New Shoots
Keeping on top of new growth can gradually reduce the spread of lily of the valley.
Pull up young shoots as soon as they appear, ideally before they develop deep roots or set flowers.
This weakens the plant over time and slows down its expansion.
3. Smothering With Mulch or Plastic
You can get rid of spreading lily of the valley by smothering the patches to cut off light and prevent photosynthesis.
Cover the area with thick layers of mulch such as wood chips or straw, or use black plastic sheeting to block sunlight completely.
Keep the cover in place for several growing seasons to starve out the rhizomes below the soil surface.
4. Use of Herbicides
When manual removal gets overwhelming, herbicides formulated to kill broadleaf plants can be applied carefully.
Glyphosate is commonly used but should be applied directly on the foliage to avoid damaging other plants.
If you go the chemical route, repeat applications will be necessary because the rhizomes store energy and can resprout after initial treatment.
Follow all safety guidelines and consider spot-treating only affected areas.
5. Combine Approaches for Best Results
The best way to get rid of spreading lily of the valley is usually a combination of digging, pulling, smothering, and, if needed, herbicides.
Persistence is important because lily of the valley is a tough perennial.
One-time removal rarely works, so plan on multiple seasons of effort to fully eliminate it.
Preventing Lily of the Valley From Spreading Again
Learning how to get rid of spreading lily of the valley is only part of the battle; preventing its return is crucial.
1. Install Barriers
After clearing existing lily of the valley, install root barriers around the area to stop rhizomes from creeping back.
Plastic or metal edging buried 12-18 inches deep can effectively block underground spread.
2. Plant Competitive Ground Covers
Replace cleared areas with aggressive, dense ground covers that compete well for water and nutrients, making it hard for lily of the valley to re-establish.
Examples include pachysandra, vinca, or native grasses.
3. Maintain Healthy Garden Practices
Keep your garden beds well-weeded and mulched to reduce bare soil exposed for lily of the valley to recolonize.
Water plants properly and practice crop rotation if planting vegetables nearby, to maintain soil health that deters invasive spread.
When to Call a Professional for Lily of the Valley Removal
Sometimes, the best option for how to get rid of spreading lily of the valley is to hire professional landscapers or gardeners.
1. Large Infestations
If lily of the valley has taken over a huge part of your garden, manual methods may not be feasible.
Pros have the tools and experience to manage large-scale removal efficiently.
2. Safe Use of Chemicals
Professionals understand proper herbicide use to minimize risks to nearby plants, pets, and people.
They can apply the right products at the proper times for the best results.
3. Long-Term Control Plans
Experts can also help you develop long-term strategies to prevent lily of the valley from spreading back after removal.
They may suggest soil amendments, barriers, or replanting schemes tailored to your garden’s conditions.
So, How to Get Rid of Spreading Lily of the Valley?
Getting rid of spreading lily of the valley is a challenge because of its aggressive underground rhizomes that spread quickly.
However, by digging out the plants thoroughly, continually pulling new shoots, smothering patches with mulch or plastic, and carefully using herbicides, you can control and eventually remove it.
Preventing lily of the valley from spreading again involves installing root barriers, planting competitive ground covers, and keeping your garden healthy and mulched.
For large infestations or if you want expert help, calling a professional is often the fastest and safest way to get rid of spreading lily of the valley.
With patience and persistence, you can reclaim your garden from this spreading perennial and enjoy your flower beds or lawn again.
Now you have a clear, friendly, and practical guide on how to get rid of spreading lily of the valley once and for all.