If you’re searching for how to get rid of creeping jenny, you’ve likely seen its cheerful yellow flowers turn into a garden menace. Creeping Jenny’s vigorous growth can be a gardener’s headache, requiring persistent and strategic methods to remove it from planting beds. This fast-spreading ground cover, also known as Lysimachia nummularia, can quickly choke out other plants and dominate your landscape.
This guide provides a clear, step-by-step battle plan. We will cover manual removal, effective smothering techniques, and careful herbicide use. You will learn how to reclaim your garden beds and lawn from this invasive perennial.
How To Get Rid Of Creeping Jenny
Successfully removing Creeping Jenny requires a multi-pronged approach. There is no single magic solution, as the plant regrows from tiny stem fragments and a network of roots. Your strategy will depend on the infestation size, location, and your gardening preferences.
Patience and consistency are your greatest allies. You must be prepared to monitor the area and repeat treatments for at least one full growing season, if not longer. Let’s break down the most effective methods.
Manual Removal And Digging
For small, newly established patches, manual removal is the most immediate and chemical-free option. The goal is to extract as much of the root system as possible to prevent regrowth. This method is labor-intensive but highly effective for contained areas.
You will need a few key tools: a garden fork or hand trowel, a sturdy rake, and a tarp or bucket for collecting debris. Wear gloves, as the stems can be slippery and tenacious.
Step-By-Step Digging Process
- Water the area thoroughly the day before. Moist soil makes it easier to pull roots without them breaking.
- Use a garden fork to gently loosen the soil around the perimeter of the patch. Avoid slicing through stems and roots.
- Carefully lift sections of the mat, shaking excess soil back into the bed. Follow stems to their roots and gently pull.
- Place all plant material directly into a bag or onto a tarp—do not compost it, as it can easily reroot.
- Once the major roots are removed, use a fine-tined rake to sift through the top few inches of soil to collect any leftover stem fragments.
Dispose of the plants in sealed black plastic bags left in the sun for several weeks, or through municipal yard waste if allowed. Never discard Creeping Jenny near compost or natural areas.
Smothering And Solarization Techniques
Smothering, or sheet mulching, is an excellent non-chemical method for larger beds or areas where you can afford to pause planting. It works by blocking sunlight, which the plant needs to survive. Solarization uses the sun’s heat to cook plants and seeds beneath clear plastic.
Both methods require time—typically a full growing season—to be truly effective. They are best started in late spring or early summer when the plant is actively growing.
How To Smother Creeping Jenny
- Mow or cut the Creeping Jenny as low as possible to the ground.
- Water the area well to encourage biological activity.
- Cover the entire infested zone with a layer of overlapping cardboard or several sheets of newspaper. Overlap edges by at least 6 inches to prevent stems from finding light.
- Soak the cardboard or paper thoroughly to hold it in place and start the decomposition process.
- Top with a thick layer (4-6 inches) of organic mulch, like wood chips or straw.
- Leave the barrier in place for a minimum of 6-8 months, checking edges for any escapees.
Using Solarization
Solarization is most effective in regions with strong, consistent summer sun. Till or rake the area to loosen the soil and expose roots, then water deeply. Stretch clear (not black) plastic sheeting tightly over the area, burying the edges in soil to create an airtight seal. The heat trapped underneath will kill Creeping Jenny and many weed seeds over 4-8 weeks of hot weather.
Chemical Control With Herbicides
For severe, widespread infestations, targeted herbicide use may be necessary. It is crucial to choose the right product and apply it correctly to minimize harm to desirable plants and the environment. Always read and follow the manufacturer’s label instructions precisely.
Systemic herbicides, like those containing glyphosate or triclopyr, are absorbed by the leaves and travel to the roots, killing the entire plant. These are most effective when Creeping Jenny is actively growing and not under drought stress.
Safe And Effective Application Tips
- Choose a calm, dry day with no rain forecast for 24 hours.
- Use a shield or cardboard to protect nearby plants from spray drift.
- For spot treatment, consider using a sponge or paintbrush to apply herbicide directly to the Creeping Jenny leaves, minimizing contact with soil.
- Apply when the plant is in its flowering stage for maximum translocation to the roots.
- Be prepared for a second, follow-up application as new shoots may emerge from dormant roots.
Remember that non-selective herbicides will kill any plant they touch. For lawns, selective broadleaf herbicides may be an option, but Creeping Jenny can be resistant; consult a local garden center for the best product in your area.
Preventing Regrowth And Reinfestation
Eradication is only half the battle; preventing Creeping Jenny from returning is critical. Vigilance and good garden practices will protect your hard work. The plant can regrow from the tiniest piece of stem left in the soil or be reintroduced from contaminated mulch or plants.
After removing the main infestation, monitor the area weekly. Hand-pull any new sprouts immediately, ensuring you get the root. This consistent effort will exhaust the plant’s energy reserves stored in the roots over time.
Long-Term Landscape Strategies
- Establish a physical barrier. When planting near an infested area, consider sinking edging material 6-8 inches deep to block underground runners.
- Plant densely. In cleared beds, use aggressive, shade-producing ground covers or shrubs that can compete with any leftover Creeping Jenny.
- Maintain healthy lawn turf. A thick, vigorous lawn is the best defense against Creeping Jenny invading grassy areas.
- Inspect new plants. Before introducing any new plants or soil to your garden, check thoroughly for hitchhiking stems of Creeping Jenny.
Disposal Of Plant Material
Improper disposal is a common reason for reinfestation. Creeping Jenny is remarkably resilient and can root from a single node on a discarded stem. Never put it in your home compost pile, as most piles do not get hot enough to kill it.
The safest methods are bagging and solarizing or sending it to a professional composting facility that achieves high temperatures. If you must compost it on-site, dedicate a separate, sealed compost bin and let it decompose for at least two full years before using the material.
Identifying Creeping Jenny And Understanding Its Growth
Correct identification is the first step. Creeping Jenny is a low-growing perennial with round, penny-sized leaves arranged opposite each other on slender stems. In summer, it produces bright yellow, cup-shaped flowers. Its most defining feature is its aggressive habit; stems root at every node that touches soil, creating a dense mat.
It thrives in moist, partly shaded areas but can tolerate full sun and a range of soil conditions. This adaptability is what makes it so invasive. Understanding that it spreads by both runners (stolons) and seed helps you target your removal strategy at all points of reproduction.
Common Challenges And Mistakes
Many gardeners become frustrated when Creeping Jenny returns after treatment. This is often due to a few common oversights. Recognizing these pitfalls can save you time and effort.
Incomplete Root Removal
The most frequent mistake is leaving root fragments in the soil. The plant can regenerate from a piece as small as an inch. When digging, be through and sift the soil carefully. If you opt for herbicide, a single application is rarely enough; a follow-up treatment is almost always required.
Using The Wrong Herbicide Or Method
Some contact herbicides only burn the top growth, leaving the roots unharmed and ready to sprout. Always select a systemic product. Similarly, black plastic for smothering is less effective than cardboard or clear plastic, as it blocks light but does not generate the same heat as solarization.
Lack Of Patience And Follow-Up
Treating Creeping Jenny is a project, not a one-time task. Expect to manage the area for a full year. Mark your calendar for monthly check-ups in the first season after major removal. Consistent follow-up is cheaper and easier than starting over from scratch.
FAQ About Removing Creeping Jenny
What Is The Fastest Way To Kill Creeping Jenny?
For immediate results on a visible patch, a careful application of a systemic herbicide like glyphosate is the fastest method. However, “fast” is relative; the plant will take 1-2 weeks to show die-back, and regrowth from deeper roots may require a second treatment. Combining quick herbicide use with diligent follow-up hand-pulling offers the most efficient timeline.
Will Vinegar Kill Creeping Jenny?
Household vinegar (acetic acid) is a contact herbicide that will burn the foliage of Creeping Jenny. It may appear to work initially, but it does not kill the root system. The plant will almost certainly regrow from the roots, often with renewed vigor. For this reason, vinegar is not considered a reliable or permanent solution for established patches.
How Do I Get Rid Of Creeping Jenny In My Lawn?
In lawns, your options are more limited. You can spot-treat with a selective broadleaf herbicide labeled for use on your type of grass. Improving lawn health through proper mowing, fertilization, and aeration is crucial to help grass outcompete the invader. For small patches, cutting out the sod, removing all roots, and reseeding is a solid chemical-free approach.
Is Creeping Jenny The Same As Creeping Charlie?
No, they are different plants, though both are invasive ground covers. Creeping Charlie (Glechoma hederacea) has scalloped, kidney-shaped leaves with a minty smell when crushed and produces small purple flowers. The control methods are similar, but identification is important as some herbicides may be more effective on one than the other.
Can You Compost Creeping Jenny?
It is not recommended to compost Creeping Jenny in a standard backyard compost bin. The pile rarely gets hot enough to destroy its viability. If you have a dedicated “hot compost” system that maintains temperatures above 140°F for an extended period, it might be safe. Otherwise, bag it and dispose of it with your yard waste or solarize it in black bags first.