Snow Mold

Yikes! What the heck happened to my lawn over the winter? The grass is all matted down and instead of a healthy, green color, it’s turned a sickly, grayish-tan, and unnatural pink. I have a few patches in my yard, but after a little research, I learned that it is a fungus called snow mold.

There are two types of snow molds: gray and pink. They each have unique characteristics, but for the average homeowner, you just need to know that they are psychrophilic (cold-loving) funguses and they thrive when snow provides a dark, humid environment. So, my snow mold problem most likely grew on my lawn, and maybe yours, because we got snow that built up on our yards and stayed around for a little while.

How do you fix it?
Fungicides are not typically recommended because most of the time the problem will correct itself. Instead, find all the affected areas of your lawn, gently rake the spaces, and remove all the dead and decaying matter. Give your lawn a modest application of fertilizer and it should bounce back. If you have a lot of damage, you may need to re-seed some patches in your lawn. Spring is a good time to re-grow grass and your lawn can be looking better before you know it.

How do you prevent snow mold in the future?
First, do not leave grass uncut at the end of the season and the final cutting, as grass becomes dormant, can be shorter to minimize matting. Also, avoid applying heavy nitrogen fertilizers late in the growing season. Once the snow begins to accumulate in your yard, remove or prevent snow build-up on grass, if possible. In spring or summer, check the amount of thatch in your lawn and consider de-thatching and/or aerating to remove thatch build-up and increase oxygen in your soil. Finally, adding some humus (compost) will help to build beneficial microbes and improve your overall soil and grass health moving forward.

Thankfully, snow mold is not a major issue to worry about. With proper autumn maintenance and the removal of snow when it comes during wintertime, you can avoid this issue in the future. But if you do get snow mold, simply address it in the spring and your lawn will bounce back.

Stay sharp when mowing your lawn with these lawn mower maintenance tips.

To keep your mower in tip-top running condition, have a competent service professional thoroughly inspect your mower at least once a year.

Inspection areas:

Sharpening and balancing the blade [youtube]. A dull blade tears grass and can leave in prone to disease, and an unbalanced blade can cause your mower excess wear and tear.

     Check the air filter. If you are using the mower in dry or dusty conditions, you will need to replace the air filter more often.

                               Check the spark plug. Always ensure that the spark plug is clean and gapped correctly.

    


   


     Check the carburetor and have it adjusted if necessary.






                                Check to oil, and have it changed if needed.  

      Check the wheels, bags, and
belts and replace as needed.

Your lawn mower is likely the most frequently used piece of outdoor power equipment that you own - here's a maintenance calendar that's handy to use. Proper maintenance is extremely important to maximizing efficiency, reducing emissions, preventing costly repairs and extending the life of your lawn mower. By keeping your mower in proper working order, you can help maintain a healthy environment, pocketbook and lawn.

For more information on lawn care, contact your local University of Idaho Extension office! 

Lawn watering and fertilization.

To produce top quality lawns you need to care for the grass so that its growth is not limited by nutritional needs, insects, or weed pests and water.

Water is usually the biggest problem that needs to be solved to develop the best looking lawns. Lawns need from one inch to one and a half inches a week. If the soil is good and of adequate depth it is best to apply water twice a week. More water than 1.5 inches will weaken the root system because it slows the movement of oxygen in to the soil and the root require oxygen to survive. When less than an inch of water is applied the soil will dry out between water and the top of the grass will start to go dormant.

The amount of Fertilizer the grass needs depends on how is it used and what you want it to look like, here is a good article on the issue.

The article focused on nitrogen because it is the nutrient the grass needs us to supply the most, the other nutrients you may need to supply are phosphorus and potassium. A soil test will help you determine how much, if any, of these nutrients you need to apply.

Did someone throw up on the lawn? It may be snow mold.

Now that the #snow is melting off the #grass, you may be noticing snow mold. Here is what you need to know to manage it:

Rapid drying and warming will lessen the outbreak of disease.

Remove snow to allow better drainage and remove the mycelial crust on infected turf by raking. This will help recovery of the grass.


Lightly applying a low dose of nitrogen fertilizer in the spring will promote new growth.When applied in the fall, fungicides can be useful in controlling disease, but are not effective when applied in late winter or early spring!

Additionally, for pink snow mold it’s important to maintain low soil pH and balanced soil fertility.

Aeration of your lawn will help remove thatch and allow for oxygen to penetrate the soil and reach the roots. This will help your lawn recover more quickly. This is also a good time to reseed any areas which may need to be reseeded.

For more information, contact your local county extension office!