The best way to go about lawn disease control is by properly maintaining your lawn to encourage health and hardiness. However, though they may not look like it, lawns are complex ecosystems, with each square foot of lawn containing 500 to 1000 individual plants, each one requiring a healthy mowing regime, soil that drains well, and just the right amount of sun, water, and nutrients. If any of these requirements isn’t met and the pathogen is present, your lawn may be susceptible to lawn disease. Of course, some diseases are more common than others. Read on to find out which common lawn diseases your lawn may be at risk for.
This lawn disease is characterized by reddish-brown spots on the blades of grass, affected areas of the lawn ranging in size from as small as 2 inches to as large as 10 feet. Anthracnose is most common in humid weather ranging from 75 to 95 degrees, especially after heavy rain.
Brown patch lawn disease is one of the most common lawn diseases for all types of grass, but is particularly prone to affect fescue lawns. Brown patch can also be highly damaging, as it can kill large circular swaths of lawn in just a few hours. The disease is most common when temperatures exceed 70 degrees and humidity is high.
Copper spot is another common lawn disease, characterized by the development of small red spots that become darker and larger as the disease progresses. Fortunately, grass is only affected in small, circular patches one to three inches wide, but grass that is affected typically dies quickly. This disease is most common when temperatures are in the seventies and when humidity is high.
Often confused with copper spot, dollar spot is also characterized by the formation of splotches on grass in circular patches, but dollar spot lawn disease affects much larger areas. Dollar spot typically affects patches of grass ranging from four to twelve inches in diameter. Dollar spot lawn disease can also occur in a wider variety of temperatures, from 60 to 85 degrees, and may result from under-fertilization.
Red thread causes grass to become tan or bleached in color and to shrivel from the tips, and may lead to small patches of dead grass. In wet conditions, in particular, you may notice what looks like small pink thread in the grass. Like dollar spot, red thread can result from under-fertilization. It is most common in mild and damp weather.
Rust lawn disease is characterized by orange, dusty looking spores covering the blades of grass, giving a rusty look to affected areas. Unlike other common diseases, rust doesn’t generally harm grass, but it is an unsightly irritation for people trying to maintain a beautiful lawn. Rust generally occurs in temperatures ranging from 60 to 75 degrees, and unlike other lawn diseases, is most common in dry weather.
Summer patch, also called frog disease, can be identified by light green patches up to two feet in diameter, which later turn reddish brown. Some of these patches may have a circle of green grass remaining in the middle. This disease is common in warm, humid weather, as well as in drought-stressed lawns.
Lawn Disease Control
It’s not uncommon for homeowners to unintentionally increase their lawn’s risk of lawn disease by over fertilizing or allowing excessive thatch buildup. Avoid this by staying away from fertilizers that use fast release nitrogen, which can increase disease activity and by keeping thatch to less than half an inch to allow light and air to reach the soil and to facilitate draining.
In addition, homeowners should aerate while the weather is cool and most disease pathogens are inactive. Try to avoid mowing when the weather is hot and humid in order to limit the spread of pathogens and minimize the stress put on your grass. You may also want to prune or remove trees and shrubs to maximize penetration of the soil by light, air, and water. If disease continues to be a problem, you may want to try a fungicide. If all else fails, hire a professional lawn care service, like Lawnscape Systems, Inc.
Lawnscape Systems is a premier lawn care provider that has been servicing customers in the Los Angeles area for almost four decades. Whether you are seeking comprehensive lawn care programs or simply want a little help for the odd lawn care job here and there, our lawn care specialists are happy to help you achieve the lawn of your dreams. Contact Lawnscape today to get the healthy, gorgeous lawn you’ve always wanted.