Helminthosporium Leaf Spot and Melting Out Disease – The disease that occurs usually on cool and moist weather. Frequent rain and High Humidity will trigger the development of disease in your lawn and in some cool season grasses this helminthosporium leaf spot is the major problem that is commonly experienced in grasses especially with those who has kentucky bluegrass or ryegrass. And the bermuda type of grass will also suffer the most under warm season grasses.

Usually, its first symptoms is the leaf spot where you can see tiny purple colored spots on your grass blade may it be 1/32 to ¼ inch that will also depend on the kind of grass you have. Then as the spot enlarged the center portion then changes color it turns into tan while the edges outside will still be purple. Then the melting out period This happens depending on the mode of your surroundings may it become dry for the disease to disappear then the grass will start to grow. Otherwise the grass will turn from yellow to orange loosing its life.

Spring Dead Spot – The most
dangerous diseasethat could cause heavy damage to your grass especially with bermuda grass. A fungi commonly known in U.S. as Leptosphaeria Korrae and Ophiospharella herpotricha. These fungi usually attack a full-blown bermuda grass lawns. Those grasses that are weak and does not have enough nutrients to fight diseases are very much prone to it. This kind of disease will start to invade during fall when the soil cools up to 80 degrees by that time the disease will start to grow to attack its roots.

You will notice that your grass is sick when it is becoming dull and has patches and looks weak. This symptoms will become more clear when spring comes the growth of the disease will tend increase rapidly.

Red Thread and Pink Patch Diseases – This two diseases frequently appear at the same time. This usually affects grasses like kentucky bluegrass, ryegrass, bentgrass etc.. This is the easieast to detect in lawns as this creates a bright pink color and become reddish fungus in a thread like look. During moist cool morning, the fungus invade into the grass with this pink colored gelatin known as mycelium. They strike into the grass when there is no enough nitrogen as they could easily grow in a moist, cool area within your lawn

Powdery Mildew – When this occurs in your lawn, you will notice that your grass looks powdery as if there is a powder being applied to it. You have to be alarmed as this is the disease that develops in light or heavy shade. This is very common to kentucky bluegrass and in fescue as well especially when temperature is in 60 to 70 degrees in humid weather. Unlike other diseases,this does not really attack on roots. However,the powder thing you noticed in your grass could block the sunlight that for the photosynthesis to go through it an would make your grass look dull and worst is that they could die too.

This entry was posted on Wednesday, May 13th, 2009 at 8:40 pm and is filed under Lawn Diseases. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.