It may seem to early to be blogging about spring time, as the weather seems to be getting colder these days instead of warming up. But, a little advance knowledge can never be a bad idea to help you prepare for the spring season even if mother nature doesn’t want to participate in everyones wishful thinking that “April showers will bring May flowers”. got mold? wants to help you and your loved ones with your seasonal allergies as much as we can.
Both pink (Fusarium patch) and gray (Typhula blight) snow mold infect grass blades during periods of cool (1°C-5°C), wet weather from late fall through spring. It’s not bitterly cold winter temperatures that provide ideal conditions for these fungi, but rather cold, damp conditions that are so common during periodic thaws throughout the winter – and especially in March and even April (depending on mother natures cooperation)
The good news is that only grass blades are infected – not the crowns of grass plants that are located right at or just below the soil surface. Therefore, as “low-tech” as it may seem, simply breaking apart the matted crust of dead leaf blades, with gentle, straight up-and-down strokes of a leaf rake – not vigorous horizontal strokes as if raking leaves – is the single best way to deal with snow mold.
As tedious as this may sound – especially if you have a big lawn – breaking apart the crusted leaf blades will allow sunlight to warm the soil more quickly, encouraging new grass blades to quickly grow through the decaying layer of dead leaf blades. In fact, don’t even try to rake off the dead grass blades, as doing so may also encourage the germination of dormant crabgrass seed if too much sunlight reaches the soils surface.
In most cases, by the time you’ve mowed your lawn a couple of times, you won’t even be able to see where the patches of snow mold were most severe in your lawn.
To reduce the severity of snow mold infections in the future keep mowing your lawn until it stops growing in the fall – which may mean Thanksgiving, or even later in some years! Also, do not fertilize your lawn between the middle of September and roughly the middle of November. And, core aerate your lawn once each year in late August or early September to encourage the decomposition of thatch that may harbor dormant spores of snow mold fungi.
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