![]() The disease is caused by the pathogen Pythium species, which thrives in wet and humid weather conditions. Pythium blight is a fungal disease that affects cool-season turfgrasses such as tall fescue and annual bluegrass. Pythium Blight: Causes and Symptoms Causes Prevention is key to avoiding pythium blight, and measures such as proper watering and mowing practices, improving soil drainage, and avoiding over-fertilization can help to reduce the risk of an outbreak. It can be particularly damaging to cool-season grasses such as Kentucky bluegrass and perennial ryegrass, but can also affect warm-season grasses like Bermuda grass. ![]() Outbreaks of pythium blight are most common in the summer months when temperatures are high and humidity is elevated. Symptoms of pythium blight include greasy, water-soaked patches of grass that can quickly turn brown and die. It is caused by the pathogen Pythium aphanidermatum, which thrives in warm, humid conditions and can spread rapidly in wet grass. Call us today at 76 for a free quote.Pythium blight is a fungal disease that affects turfgrass and can cause significant damage to lawns and golf courses. And, if you’d like to have your best lawn year-round, we have a lawn care package for everyone’s needs and budget. Shades of Green Lawn & Landscape knows just how to care for your lawn to prevent and treat fungal infections. Be warned, however, that many other lawn diseases mimic pythium blight, and fungicides will not necessarily treat those lawn issues, so accurate diagnosis is key. In fact, large areas of grass can be killed in a matter of days! Fungicides are essential to control pythium blight. Pythium blight spread rapidly, so it’s important to get it under control as soon as you notice signs of the disease. To balance the pH level, your soil may also need applications of lime. Check Your Lawn’s pH Level: If your soil’s pH level isn’t neutral (about 7.0), your grass doesn’t have the right environment to thrive, but weeds might.Aerate Your Soil: Soil compaction keeps air and water from reaching the deeper levels of soil where grass roots grow, so only plants that grow nearer to the surface, like weeds, can thrive.Reseed patchy spots: Grass roots go deep into the ground and take up a lot of space, taking away the valuable real estate weeds need to thrive.It prefers long soakings about two to three times weekly instead of daily watering, depending on the rain levels from the week. Water Well: Your grass needs adequate water to thrive.Maintaining a healthy turf can help stave off a pythium blight infestation. Plus, ensure your grass has proper drainage so roots are not waterlogged. Do not add extra nitrogen to your lawn because the disease favors the nutrient. Outbreaks usually occur in the same areas each year, so pay extra mind when preparing your yard for a healthy season. ![]() Timing: It appears in the summer when dew periods are long and evening temperatures remain 68 degrees or higher. Outbreaks tend to start in low areas where more soil moisture is maintained. Risk: Pythium blight is particularly damaging to creeping bentgrass, annual bluegrass, rough bluegrass, and perennial ryegrass. The infected turf dies and becomes matted. Patches of cottony white mycelium may be visible in the morning. Appearance: It starts out with small, circular patches of collapsed, water-soaked leaves and stems on close-mowed turf. ![]()
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