Identifying Lawn Diseases

As the lawn care season continues to move forward, you should be on the lookout for signs of disease that could devastate your lawn by causing discoloration and poor growth. It is important to know how to identify these diseases as they can affect all types of grass. This post is a guide to identifying five of the most common diseases that affect common grass types.

Red Thread:

Red thread disease, or Laetisaria fuciformis, is a fungal disease that attacks lawns that are low in nitrogen. This disease is more prominent in cool, damp weather and appears as patches of pinkish red grass. Affected grass blades may also have tiny red thread-like growths of mycelium fungus.

Dollar Spot:

Dollar spot, or Sclerotinia homoeocarpa, is a common fungal disease that is prevalent in warm, moist conditions. The fungus that causes dollar spot attacks lawns when they are wet and causes brown colored lesions on the grass blades. The infected areas form circular patches that are initially the size of silver dollars and grow into larger patches as it kills infected grass.

Brown Patch:

Brown patch, or Rhizoctonia solani, is a fungal disease that infects lawns during hot weather. It appears on the surface as rough, circular brown patches that can cover areas of up to 1 to 5 feet across and kills individual leaves and grass blades. Infected areas may turn dark green in color and then turn yellow as they wither away. These areas may also have gray, cobweb-like strands of mycelium fungus in the morning dew.

Leaf Blight:

Leaf blight, or Ascochyta spp., shows symptoms that are very similar to drought or fertilizer burn, but with more damage happening at a much faster rate. This disease is caused by fungal spores that infect the grass during wet weather when it is freshly mowed. It kills grass blades starting at the tip and can be identified by white blade tips and straw-colored patches.

Necrotic Ring:

Necrotic ring, or Ophiosphaerella korrae, is caused by a fungus that attacks the roots of sodded lawns. It is often triggered by improper watering or high applications of water-soluble nitrogen. The damaged area appears as a yellowed ring of grass with a healthy patch of grass in the middle.
Becoming familiar with the signs discussed on this guide can greatly help in identifying these diseases early enough to minimize the damage. However, lawn diseases can still be difficult to diagnose and may require the second opinion and treatment of a professional lawn care provider such as Green T. Green T Lawn Care can help you identify any lawn diseases and apply the right products to eliminate the infection.
If you think any of these diseases are infecting your lawn, don’t hesitate to contact us to assess your problem and provide a solution.

2018-04-06T17:34:16+00:00 Lawn Diseases|