Creeping Charlie — also called ground ivy — is one of the most persistent lawn weeds because it spreads in three ways: by seed, by above-ground runners (stolons), and by creeping underground rhizomes. A single plant can take over large sections of lawn in a single season. This triple-threat growth habit is exactly why basic broadleaf weed killers fail on it. You need a specific herbicide to break through.
This guide covers how to identify creeping Charlie, why standard weed killers don't work, the best triclopyr-based products, and a proven two-application method that delivers permanent kill.
📋 In This Guide
What Is Creeping Charlie?
Creeping Charlie (Glechoma hederacea) — also known as ground ivy — is a perennial broadleaf weed that spreads aggressively via above-ground runners (stolons). It thrives in shaded, moist areas and can take over large sections of lawn quickly. It's identifiable by several distinctive features.
Stems are distinctly square in cross-section — unlike most round-stemmed plants. Easy to feel between fingers.
Rounded, kidney-shaped leaves with scalloped or toothed edges. Leaves grow in pairs on opposite sides of the stem.
Crush a leaf — creeping Charlie has a strong, distinctive minty or musky odour. One of the easiest ways to confirm ID.
Small tubular purple-blue flowers appear in spring (April–June). Flowers in leaf axils along the stem.
Spreads via above-ground runners (stolons) that root at nodes. Can spread several feet in a single season.
Thrives in shaded, moist areas where grass struggles. Often found under trees, along fence lines, and in low-lying spots.
Don't confuse creeping Charlie with henbit or purple deadnettle — they look similar when young but are annual weeds that die off naturally. Creeping Charlie is perennial and returns every year from the root system.
Why Regular Weed Killer Doesn't Work on Creeping Charlie
2,4-D alone — the active ingredient in many basic weed killers — has limited effectiveness on creeping Charlie because of its waxy leaf coating and extensive stolon root system. Triclopyr is the key ingredient that breaks through. It's the same active used to kill woody brush and vines, and it penetrates creeping Charlie's leaf surface far better than standard broadleaf herbicides.
Products with triclopyr + 2,4-D combination work far better than either alone. Killex (which uses 2,4-D, Mecoprop, and Dicamba) is better than basic 2,4-D, but triclopyr-based products are substantially more effective on creeping Charlie specifically.
Timing is also critical. Fall applications (September–October) are often MORE effective than spring because plants are translocating energy to roots before winter. As temperatures drop, the plant pulls herbicide deeper into the root system for a more complete kill.
As temperatures drop, the plant moves energy down into its root system — pulling the herbicide along with it for a more complete kill.
Best Products to Kill Creeping Charlie
Triclopyr-based products are the standard for creeping Charlie. The table below compares the top options.
| Product | Key Ingredient | Effectiveness on Creeping Charlie | Notes |
|---|---|---|---|
| Ortho Chickweed, Clover & Oxalis Killer | Triclopyr | ★★★★★ Excellent | Best for most homeowners — widely available |
| Hi-Yield Triclopyr Ester | Triclopyr (10.5%) | ★★★★★ Excellent | Professional-strength, more economical for large areas |
| Ferti-lome Weed-Out with Trimec | 2,4-D + MCPP + Dicamba | ★★★☆☆ Moderate | Works but slower, needs multiple applications |
| Killex Concentrate (Canada) | 2,4-D + Mecoprop + Dicamba | ★★★☆☆ Moderate | Better than basic 2,4-D but triclopyr products outperform |
| Roundup for Lawns | 2,4-D + Quinclorac + Dicamba | ★★★☆☆ Moderate | Convenient but less effective than dedicated triclopyr products |
For large infestations, consider a two-product approach: apply a triclopyr-based product in fall, then follow up with a broadleaf killer in spring to catch any regrowth.
Step-by-Step Treatment Plan
Creeping Charlie's extensive stolon system means one application rarely eliminates it completely. Here's the proven method for complete kill.
Confirm identification before treating. Check for square stems, scalloped leaves, and minty smell. Treating the wrong weed wastes product and time.
Choose a triclopyr-based product. Ortho Chickweed, Clover & Oxalis Killer or Hi-Yield Triclopyr Ester are the most effective options. Avoid products with only 2,4-D.
Apply in fall for best results (September–October). The plant is actively moving energy to roots, making herbicide translocation more effective. Spring applications (April–May) also work but may need a second round.
Apply to moist, actively growing plants. Do not spray during drought or heat. Ensure the lawn has been watered 1–2 days before application. Do NOT mow for 3–5 days before or after.
Apply two treatments 3 weeks apart. Creeping Charlie's extensive stolon system means one application rarely eliminates it completely. Plan for at least two treatments in the same season.
After kill, overseed bare patches. Creeping Charlie leaves bare spots when it dies. Overseed with appropriate grass seed and water daily until established to prevent re-invasion.
Do not apply on hot days above 27°C/80°F. Triclopyr-based products can temporarily yellow cool-season grasses under heat stress — this usually recovers but may alarm homeowners.
Preventing Creeping Charlie From Coming Back
Creeping Charlie thrives where grass is thin or struggling. Best prevention involves improving overall lawn health and density.
Improve lawn density through overseeding. Creeping Charlie invades bare or thin patches. Regular overseeding with appropriate grass seed establishes dense turf that crowds out the weed.
Raise mowing height to 3–4 inches. Taller grass shades out creeping Charlie. Many homeowners mow too short, opening the lawn to invasion.
Improve drainage and reduce shade where possible. Creeping Charlie loves wet, shaded conditions. Install drainage if necessary and remove lower tree branches to increase light.
Apply pre-emergent in early spring. Pre-emergent herbicides prevent seed germination, though they don't stop stolon spread. See our pre-emergent guide for recommendations. Also check our lawn aeration guide for fixing compaction, which promotes creeping Charlie.
Frequently Asked Questions
Ready to Eliminate Creeping Charlie?
Start with a triclopyr-based product like Ortho Chickweed, Clover & Oxalis Killer in fall for the best chance of permanent kill. Plan for two applications 3 weeks apart.