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Snow Mould: What you need to know

Every spring, we sneeze, we get runny noses and, especially this year, we wonder if we're getting sick. Often, it's not a virus or cold - it's allergies.

There are so many causes of allergies in the springtime. One of the most prevalent yet under-reported causes of allergies in the spring is snow mould.

This is snow mould! Photo c/o

According to the University of Saskatchewan College of Agriculture and Bioresources, snow mould "is caused by several types of fungi that tolerate cold temperatures and like wet conditions. It appears in lawns after the snow has melted."

Snow mould appears when layers of leaves or soil, which were trapped under layers of snow over the winter, begin to warm in the spring. It can be hard to see - some of us even think it might be dog hair! - but it is there.

Fortunately, snow mould is not toxic. A good spring rain will help with washing it away. If you notice any thinning of your grass, simply rake and overseed once the weather warms and the ground dries.

Enjoy the sun!

If you find yourself sniffling as a result of snow mould, rest easy, consider an antihistamine and let the sun's warm rays make you feel better.

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