Lawn Mower Safety: The Injuries Emergency Rooms See Every Spring

The Spring Rush Nobody Talks About

April arrives, the grass greens up, and millions of people dust off their mowers. It’s a ritual as reliable as warmer weather. What’s less visible: the steady stream of patients arriving at emergency rooms with lacerations, fractures, and amputations that could have been prevented.

Lawn mower injuries are seasonal, concentrated, and serious. They’re also largely preventable. Understanding what happens when things go wrong—and why they go wrong—matters for anyone who mows, and especially for those helping neighbors with yard care.

The Scale of the Problem

The numbers are striking. Between 2010 and 2019, U.S. emergency rooms treated more than 3.2 million lawn and garden equipment injuries—roughly 875 injuries per day. Of those, lawn mowers accounted for a disproportionate share of hospitalizations: 11.1% of mower injuries required hospitalization, compared to 7.3% for other yard equipment.

In a single year, approximately 84,944 lawn mower injuries were treated annually in emergency departments—an average of roughly 232 injuries every single day.

The financial burden is severe. A Johns Hopkins Medicine analysis of emergency room and hospitalization data found that serious lawn mower injuries cost an average of $36,987 per hospitalized patient. That’s not including follow-up care, physical therapy, lost wages, or long-term disability.

What Happens in the ER

The injuries fall into predictable categories. According to Johns Hopkins data, the most common are:

• Lacerations (nearly 47% of injuries)—deep cuts that often carry high infection risk because blade speed drives soil and bacteria deep into tissue
• Fractures (22.4%)—broken bones, often compound fractures at high risk for serious infection
• Amputations (21.5%)—the most devastating outcome, usually affecting fingers, toes, hands, or feet

The hands and feet bear the brunt. More than 65% of injuries involve the wrist or hand; another 20% affect the foot or toes. Most patients require wound irrigation and debridement—cleaning and removal of damaged tissue—and roughly a quarter need amputation surgery.

Why so severe? Mower blades spin at speeds up to 200 miles per hour, transferring energy equivalent to a gunshot. That velocity, combined with blade sharpness and the rotation pattern, creates wounds that are far more serious than a simple cut.

Why Spring Is Peak Season

Injuries rise sharply in April, peak in May, and account for 81.7% of all lawn mower injuries occurring between April and September. More than a third of accidents happen on weekends—Saturday and Sunday—when homeowners have time to tackle yard work.

Part of the spring risk is mechanical. Mowers that have sat dormant all winter may have dull blades, degraded safety guards, or unstable wheels. Starting the season without a thorough equipment check creates hidden hazards.

Who Is Most at Risk

Lawn mower injuries affect a broad population, but some groups face higher risk. About 85% of patients are men, likely because men still do the majority of residential mowing. The average age of injury is 46.5 years, but older adults (ages 50–80+) make up a large proportion of hospitalizations. This matters for anyone supporting older adults with yard care, including volunteers helping neighbors through organizations like I Want To Mow Your Lawn.

Prevention Is Practical

Most injuries are preventable with basic precautions: never reach under a running mower, keep hands and feet away from the discharge chute, wear closed-toe shoes and long pants, never mow in wet grass (which requires extra hand contact), and always disconnect the spark plug before cleaning or adjusting blades.

For those helping neighbors with yard care—whether independently or through a volunteer program—a pre-mow equipment inspection is essential. Check that safety guards are in place, blades are sharp (dull blades increase kickback risk), and the mower starts reliably without unusual vibration.

Spring yard care is necessary and valuable work. It also carries real risk. The injuries emergency rooms see every spring are preventable through attention, proper technique, and well-maintained equipment.

For neighbors who can no longer mow safely—whether due to age, injury, or health limits—free volunteer yard care offers genuine relief. Volunteers across all 50 states connect through I Want To Mow Your Lawn to help older adults, veterans, and neighbors in need with seasonal lawn and exterior home care. If you’d like to help or learn more, the MOW app makes it easy to find volunteer opportunities near you—or download it from the App Store.