Dollar weeds (also called dollarweed or *Hydrocotyle umbellata*) are common lawn invaders that form dense mats and spread quickly through creeping stems. They thrive in shady, wet areas and can outcompete grass if left unchecked. This guide walks you through effective removal methods, timing, and prevention strategies to reclaim your lawn. Whether you prefer DIY fixes or targeted treatments, you’ll find practical steps to eliminate dollar weeds and keep them from returning.
Key Takeaways
- Dollar weeds are aggressive spreaders: They reproduce via stolons (creeping stems) and seeds, making them hard to control once established.
- Timing matters for removal: The best time to treat dollar weeds is late summer when they’re actively growing and before seed production begins.
- Manual removal works for small infestations: Digging up the entire plant—roots and all—is effective but labor-intensive.
- Herbicides can be used selectively: Choose products containing 2,4-D or dicamba for broadleaf control, applied on calm days to avoid drift.
- Prevention is key to long-term success: Improve drainage, increase sunlight, and maintain healthy grass to discourage dollar weed growth.
- Consistency beats quick fixes: Multiple treatments over several weeks may be needed for complete eradication.
- Monitor shaded areas closely: Dollar weeds love moist shade—keep an eye on under trees, along foundations, and in low-lying spots.
Introduction: Tackling Dollar Weeds Before They Take Over
If you’ve noticed circular patches of lush, green plants spreading across your lawn—especially in damp, shady areas—you might be dealing with dollar weeds. These sneaky invaders get their name from their round, coin-like leaves that cluster together like tiny pennies. While not harmful to people or pets, dollar weeds can quickly choke out desirable grass and create unsightly bare spots.
The good news? With the right approach, you can stop dollar weeds in their tracks. In this guide, you’ll learn exactly how to get rid of dollar weeds in your lawn using safe, effective, and sustainable methods. You’ll discover when to act, which tools work best, and how to prevent them from coming back. By the end, you’ll have a clear roadmap to a healthier, greener lawn free of those pesky penny-sized invaders.
What Are Dollar Weeds?
Dollar weeds (*Hydrocotyle umbellata*) are perennial broadleaf weeds native to parts of North America. Unlike many lawn weeds that grow upright, dollar weeds spread horizontally along the soil surface using stolons—thin, creeping stems that root at each node. This allows them to rapidly colonize large areas, especially in conditions they favor.
They typically appear in late spring or early summer and flourish in moist, partially shaded environments. Common locations include under trees, near downspouts, around sprinkler heads, and in low-lying areas where water pools. Once established, they produce small white flowers and eventually seeds, further aiding their spread.
Contrary to popular belief, dollar weeds are not related to clover or dandelions. Their flat growth habit and tendency to form tight mats make them particularly challenging to manage with standard weed killers.
Step 1: Confirm It’s Really Dollar Weed
Before launching into treatment, positively identify the plant. Misidentifying it as something else—like clover or moss—could lead to ineffective or even counterproductive actions.
Here’s how to tell dollar weed apart:
- Leaf shape: Round, umbrella-shaped leaves about ½–¾ inch wide, arranged in clusters of three to five at the tip of each stem.
Creeps along the ground rather than standing upright; forms dense mats.
If you’re still unsure, take a photo and consult a local extension service or use a trusted plant identification app. Accurate diagnosis ensures you choose the right strategy.
Step 2: Choose Your Removal Method
There are several ways to tackle dollar weeds, ranging from hands-on physical removal to chemical treatments. Your choice depends on the size of the infestation, your comfort level with chemicals, and how urgently you want results.
Option A: Manual Pulling and Digging
For small patches (less than 10 square feet), manual removal is often the safest and most immediate solution.
How to do it:
- Water the area lightly the day before to soften the soil.
- Use a hand trowel or weeding tool to dig beneath the mat, ensuring you remove the entire root system.
- Pull or cut the stolons at ground level and collect all plant material—do not compost it unless you heat-compost it first.
- Rake the area smooth and reseed with a shade-tolerant grass mix if needed.
Tip: Wear gloves and consider wearing boots with grip to avoid slipping on the moist surface.
Manual removal works best when combined with consistent monitoring—dollar weeds can regrow from tiny root fragments left behind.
Option B: Targeted Herbicide Application
For larger infestations or persistent cases, selective herbicides offer faster, more thorough control.
Recommended active ingredients:
- 2,4-D: Effective on broadleaf weeds; commonly found in products like Trimec.
- Dicamba: Works well in warm weather; often paired with 2,4-D for enhanced results.
- Avoid glyphosate (Roundup)—it’s non-selective and will kill your grass too.
Application guidelines:
- Apply on a calm, dry day with temperatures above 60°F and no rain expected within 24 hours.
- Use a sprayer with a fine mist setting to avoid overspray onto desirable plants.
- Follow label instructions carefully—overuse can damage turf and nearby vegetation.
Note: For organic homeowners, consider spot-treating with vinegar-based solutions (5–10% acetic acid), though these require repeated applications and may affect surrounding grass if not applied precisely.
Step 3: Timing Is Everything
When you apply any treatment dramatically affects its success. Dollar weeds are most vulnerable during their peak growth phase in late summer.
Best treatment windows:
- Late July through August: When plants are actively transporting nutrients to roots and stolons.
- Avoid early spring—dollar weeds are just emerging and harder to reach.
- Do not treat after September, as cold weather slows herbicide uptake and reduces effectiveness.
If you notice dollar weeds earlier in the season, monitor closely and wait until late summer for optimal results.
Step 4: Improve Lawn Conditions to Discourage Regrowth
Even after removing dollar weeds, your lawn may remain susceptible. Addressing the underlying environment helps prevent recurrence.
Key improvements:
- Increase sunlight exposure: Trim overhanging branches or thin tree canopies to allow more light to reach the turf.
- Fix drainage issues: Install French drains, adjust grading, or redirect gutter downspouts away from problem areas.
- Overseed thin spots: Fill bare patches with shade-tolerant grasses like tall fescue or Kentucky bluegrass.
- Mow higher: Raise your mower blade to 3 inches—taller grass shades the soil, inhibiting weed germination.
- Fertilize properly: Use a balanced fertilizer in fall to promote dense, competitive turf.
Healthy grass acts as a natural barrier against weeds. By strengthening your lawn, you reduce the space and resources dollar weeds need to thrive.
Step 5: Monitor and Maintain
Eradication doesn’t happen overnight. Expect to see some regrowth, especially if you’ve only treated once.
Maintenance checklist:
- Check treated areas weekly for new shoots.
- Reapply herbicide or manually remove regrowth as needed—usually 2–3 follow-ups spaced 2–3 weeks apart.
- Keep foot traffic and irrigation off damaged areas until they recover.
- Maintain regular lawn care routines (mowing, watering, fertilizing) to support recovery.
Persistence pays off. Most homeowners report significant improvement within 4–6 weeks of consistent effort.
Troubleshooting Common Challenges
Even with the best intentions, you might face setbacks. Here’s how to handle them:
Problem: Dollar weeds keep returning
This usually means not all roots were removed or the environment still favors their growth. Revisit the area, ensure complete digging, and improve lawn conditions as outlined above. Consider combining manual removal with targeted herbicide for stubborn cases.
Problem: Herbicide damages nearby grass
Always check wind direction before spraying. Use a spray shield or apply by hand with a sponge for precision. If overspray occurs, rinse affected areas immediately with water and apply a foliar fertilizer to encourage recovery.
Problem: Rain washes away treatment
If you’ve applied herbicide and rain comes within 6 hours, reapply. Some products require dry conditions to bind to leaf surfaces effectively.
Problem: Confusion with similar-looking weeds
Dollar weeds can resemble creeping Charlie (*Glechoma hederacea*), another invasive groundcover. The key difference: dollar weed leaves are rounded and never have scalloped edges. When in doubt, consult a local cooperative extension agent.
Conclusion: Reclaim Your Lawn, One Dollar at a Time
Getting rid of dollar weeds isn’t impossible—but it does demand attention, consistency, and smart tactics. By identifying the weed correctly, choosing the right removal method for your situation, treating at the optimal time, and improving your lawn’s overall health, you can eliminate these invaders for good.
Remember: prevention trumps cure. Keep an eye on shaded, moist zones, maintain thick turf, and address drainage issues proactively. With patience and the steps laid out here, you’ll soon enjoy a lush, uniform lawn without those pesky penny-sized pests.
For more guidance on managing other common lawn invaders, check out our guides on how to get rid of clover in grass or how to get rid of moss in your lawn. And if you’re curious about natural alternatives, explore how to get rid of weeds in your lawn naturally for eco-friendly options.