Some of the most problematic grasses for allergy sufferers include Timothy, Ryegrass, and Bermuda—these are common grasses that frequently cause allergic reactions. Common northern grasses such as Timothy, Kentucky Blue, Johnson, Rye, and Fescue are especially prevalent in the northern United States and contribute to grass allergies during their pollination season.

That said, there are numerous measures you can take to manage grass allergies while mowing your lawn. From choosing the right time of day to mow to planting more allergy-friendly landscaping, you can still keep your lawn looking its best while reducing the risk of allergy-inducing particles. There are even before and after mowing practices you can adopt to keep your exposure to grass pollen at a minimum.

What Are Grass Pollen Allergies?

Grass allergies or hay fever–also known officially as seasonal allergic rhinitis–typically occurs during certain times of the year when grasses are pollinating. The season is usually late spring through early fall depending on where you live. People may experience sneezing, a runny nose, itchy eyes or mouth area, headache, tiredness, itchy nose, runny or stuffy nose, and eye symptoms such as redness, watering, and irritation. Some people may even experience more severe reactions such as asthma attacks or hives. Additionally, some people may develop a skin rash or grass rash after direct contact with grass.

Grass pollen found in freshly cut lawns and fields is one of the most widespread allergens. Grasses such as Timothy, Ryegrass, and Bermuda may induce allergies in certain individuals due to the diverse set of proteins present. Each type has its own unique set of proteins that act as allergens for some people. Grass pollen allergy can cause sneezing symptoms and other allergic responses, including inflammation of the mucous membranes. Knowing which grasses trigger your symptoms can help you manage them and enjoy outdoor activities without feeling miserable.

Diagnosis of grass allergies often involves a review of symptoms and medical history. Allergy testing, such as skin or intradermal tests, can trigger an allergic response, helping to determine if a person is allergic to grass.

Grass Allergy Diagnosis

Diagnosing a grass allergy starts with a detailed look at your medical history and a physical exam, but the most definitive answers come from allergy testing. If you experience grass allergy symptoms like a runny nose, stuffy nose, sneezing, or itchy eyes during grass pollen season, your doctor may recommend a skin prick test. This involves placing a tiny amount of grass allergen on your skin and pricking it with a tiny needle to see if a reaction—such as redness or swelling—occurs. Alternatively, a blood test can be used to measure the level of IgE antibodies your immune system produces in response to grass pollen. These tests help pinpoint whether you’re allergic to grass and which specific grass allergens are causing your symptoms. Accurate allergy testing is essential for developing an effective treatment plan and managing symptoms like nasal congestion, itchy eyes, and other signs of being allergic to grass.

Mowing the Lawn with Allergies

Mowing the lawn can be a challenge for those with allergies, as it releases pollen and dust particles that may exacerbate allergy symptoms, including nasal symptoms like sneezing, nasal congestion, and runny nose. Mowing can also cause a sore throat due to airborne allergens irritating the throat, especially when breathing through the mouth during or after mowing.

Still, there are methods to reduce the potential for irritation while keeping your yard looking its best. Avoid grasses that have high levels of pollen production and opt instead for varieties like Bermuda grass or Zoysia, which produce less allergen-causing pollen when cut back regularly throughout the season. To prevent skin reactions such as grass rash, avoid direct skin contact with grass whenever possible.

Additionally, taking over-the-counter medications such as oral antihistamines and nasal antihistamines before outdoor activities can provide relief from seasonal allergies caused by freshly cut grass. Oral antihistamines can help alleviate nasal drainage and sneezing, while nasal antihistamines may offer quick relief for nasal symptoms, but nasal steroid sprays are often more effective for nasal congestion. Note that nasal antihistamines may cause a bitter taste as a side effect for some users. Nasal drainage is a common symptom of grass allergies, and using saline nasal rinses—prepared with a modified salt packet—can help alleviate this discomfort. These approaches are part of a broader grass allergy treatment plan, which may also include immunotherapy options like allergy shots or drops to reduce symptoms and improve quality of life.

Choosing low-pollen plants for landscaping is another way to limit exposure while on the lawn mower. Additionally, keeping up with regular maintenance such as fertilizing, aerating, and watering helps keep the grass healthy without overproducing allergens.

Asthma and Grass Allergies

For many people, grass pollen doesn’t just cause sneezing and itchy eyes—it can also trigger or worsen asthma symptoms. If you have asthma, exposure to grass pollen can lead to airway inflammation, resulting in coughing, wheezing, chest tightness, and even asthma attacks. Managing both allergies and asthma is crucial, especially during grass pollen season when pollen counts are high. Treatment often includes a combination of inhalers for asthma and nasal sprays for allergy relief. For those with persistent symptoms, subcutaneous immunotherapy (allergy shots) can help reduce sensitivity to grass pollen over time, lowering the risk of severe asthma attacks and improving overall quality of life. If you notice your asthma symptoms worsen around freshly cut grass or during peak pollen times, talk to your doctor about adjusting your allergy and asthma management plan.

Grass Pollen Season

Grass pollen season is a challenging time for anyone with grass allergies. Typically, grass pollen is at its highest in late spring and early summer, but the exact timing depends on your region and the types of grass growing nearby. In warmer climates, such as the southern United States, grass pollen season can last much longer—sometimes year-round—while in cooler areas, it usually peaks from May to July. During this period, grasses release more pollen into the air, which can trigger allergic reactions and even asthma attacks in sensitive individuals. To minimize grass allergy symptoms, keep an eye on local pollen counts, stay indoors during peak pollen hours, and use air purifiers to remove pollen from your home. Understanding when grass pollen season occurs in your area is key to avoiding exposure and managing allergy symptoms effectively.

Most Allergenic Grass

Not all grasses are created equal when it comes to triggering allergies. Some of the most allergenic grasses include timothy grass, orchard grass, and bermuda grass, all of which produce large amounts of pollen that can cause allergy symptoms and allergic reactions. Ryegrass and bluegrass are also common culprits, though they tend to produce less pollen than timothy or bermuda grass. These types of grass are often found in lawns, parks, and fields, making them hard to avoid during pollen season. If you’re sensitive to grass pollen, try to limit your time outdoors when these grasses are pollinating, especially during early summer. Wearing an allergy mask or using nasal filters can help reduce your exposure to pollen and other allergens. By knowing which types of grass are most likely to trigger allergic reactions, you can take steps to avoid them and better manage your grass allergy symptoms.

Tips for Reducing Exposure

By implementing methods to reduce contact with allergens, it is possible to lower the likelihood of an allergic reaction when mowing the lawn. Before mowing, for example, be sure to consult local pollen readings and check the pollen count, as high pollen counts can significantly increase exposure and trigger symptoms. Monitoring the pollen count is important for managing exposure, especially for those with pollen allergies.

Creating a lawn care schedule is key to managing exposure to allergens in the springtime when levels are high. Try mowing in the early morning hours or late evening when pollen counts tend to be lower and avoid using electric leaf blowers that stir up dust particles containing pollen and mold spores. Dr. SriniVasan Ramanuja, an allergist at the Mankato Clinic, recommends bagging lawn clippings and compost to keep pollen levels low. Grass allergy season typically starts in early summer and can extend through early fall, but the timing and severity can vary across different regions of the United States due to differences in grass types and climate. This means that pollen allergies and the best times to mow may differ depending on your location.

Additionally, consider investing in low-pollen plants for landscaping around your yard.

Wearing an N-95 mask when mowing will help reduce exposure by trapping airborne particles from entering your respiratory system. Inflammation of the mucous membranes in the nose and throat is a major contributor to allergy symptoms such as nasal congestion and hay fever; reducing exposure to grass pollen can help minimize this inflammation. After working outside in the year or being exposed to freshly cut grass it’s important to immediately rinse off. Showering should wash away any pollen that may have gotten on your skin or clothing. And, of course, put on freshly washed clothes after showering.

Alternatives to DIY Lawn Care

Hiring professional landscapers who specialize in allergy-friendly gardens is one way to reduce exposure to allergens while maintaining a healthy landscape. Professional landscapers understand which plants are low in pollen production. They also know the best time of day for certain yard tasks such as mowing or trimming hedges so you don’t have to worry about being exposed during peak pollen hours.

Another option for reducing allergen exposure is the use of robotic lawnmowers. This technology allows you to set up a schedule for mowing without having any direct contact with the grass itself, reducing exposure to grass pollens and other allergens present outdoors.

Additionally, sublingual immunotherapy is another alternative for managing grass allergies. This treatment can be taken at home and offers a convenient option for individuals seeking to reduce their allergic reactions to grass pollen.

FAQs

Should I Mow the Lawn if I Have Allergies?
Allergy sufferers should avoid mowing the lawn. Pollen and other allergens can be released into the air when mowing, which may cause an allergic reaction in susceptible individuals. According to the Asthma and Allergy Foundation of America, managing exposure to grass pollen and other allergens is important for those with allergies. Using a lawn mower also creates exhaust fumes that could further irritate your lungs and worsen existing allergy symptoms. If you have to mow the lawn, wearing a mask is suggested to help minimize exposure to airborne allergens.

Does Cutting Grass Make Allergies Worse?
Mowing the lawn may exacerbate allergies for certain individuals, as allergens and pollen that are released into the atmosphere when cutting grass can cause an allergic reaction. People with grass pollen allergy may experience symptoms such as watery eyes, nasal congestion, sneezing, and respiratory discomfort. Moreover, mowing with a gas-powered lawn mower produces pollutants that may worsen allergy symptoms. Using an electric or battery-powered lawn mower is advised to reduce the effects of allergens and pollutants. Allergy sufferers should also wear protective gear such as goggles and a mask while mowing.

Does Keeping Grass Short Help with Allergies?
Maintaining a low grass height may assist in reducing the amount of pollen and other allergens present in the atmosphere, potentially providing some respite from allergy symptoms.

Does Grass Trigger Allergies?
Exposure to grass may trigger allergies in certain people. Allergies result from the body’s defense system overreacting to proteins present in the pollen of vegetation such as trees, weeds, and grasses. Mowing the grass and other lawn care work may increase the risk of an allergic reaction for those prone to allergies. However, it is possible to reduce the risks by adhering to certain protocols.