Pink belongs on cotton candy and bubble gum, but it is a major red flag when it appears on your grass.
If you notice matted, colorful patches emerging as the snow melts in Idaho Falls, your lawn is likely suffering from a winter-active fungus.
These circular spots, known as snow mold, thrive under the heavy, wet snowbanks common in Eastern Idaho.
While the pathogens live in your soil year-round, they only become a visible threat when the perfect combination of moisture and cold temperatures allows them to infect your turf.
Early spring is the most critical time to address these diseases before they move from the grass blades down into the roots. If left matted and damp, these patches can suffocate the emerging spring growth and lead to permanent dead spots.
Does your lawn have superficial gray mold, or is a more aggressive pink infection threatening to kill the crown of your grass?
Let’s learn more about Idaho spring lawn diseases.
Damp winters and humid spring weather stress your lawn.
Heavy, wet patches of snow. Standing water. Poor drainage. It all adds up to some common Idaho spring lawn diseases.
Just when you’re excited about seeing fresh new spring grass, you look out at your lawn and see large, round patches of dead or dying grass. They might be gray. Or even pink.
What the heck? How can lawn diseases spread in winter? It’s frozen out there.
Here’s a fun fungus fact: the pathogens for spring lawn diseases are there in your soil all the time.
When the right conditions exist — snow falling before the ground is frozen, melting snow pooling under frozen snowbanks, decaying piles of leaves providing damp shelter — the dormant pathogens become active.
And once spring lawn diseases in Idaho Falls become active, they can quickly infect your grass.
Here’s a look at the most common spring lawn diseases in Idaho:
Snow mold is generally the first spring lawn fungus to appear in Idaho Falls after the snow begins to melt.
You’ll notice circular brown or pink matted areas of your lawn ranging from two inches to three feet.
There are two types of snow mold. Here’s a look at pink snow mold vs gray snow mold:
Good news: the best treatment for Idaho snow mold in spring is pretty easy.
Just gently rake out the affected areas to improve air circulation and help your lawn dry out. Gently break up any moldy, matted areas of grass.
This looks similar to pink snow mold except the centers of the infected patches aren’t as matted. If this spring lawn fungus isn’t detected early, it can stick around. Damage to your turf can become severe and long-lasting.
You can help prevent this spring lawn disease in Idaho by reducing thatch through aeration. That will help improve drainage so your lawn doesn’t get waterlogged. We’ll talk more about lawn aeration for disease prevention in a bit.
Powdery mildew looks a lot like it sounds. This common Idaho spring lawn disease shows up as white or gray powdery spots or patches.
If your Idaho lawn is Kentucky bluegrass and tends to be shady and wet, it can be susceptible to powdery mildew.
Powdery mildew is common in Kentucky Bluegrass in Idaho. The shade-loving grass type is often planted in shady areas with low light, which encourages the fungus.
Powdery mildew likes it shady and damp. So try to boost your lawn’s sunlight and airflow. Reduce shade, and water early in the morning so the grass blades have time to dry during the day.
Fungicide application in Idaho Falls isn’t usually necessary for powdery mildew, but can be used for severe cases.
The good news: you might just need to do some raking. If your lawn’s crowns and roots aren’t infected, a light raking of the matted area will loosen the grass and allow new grass to grow.
Pro tip: Make sure you clean any tools that come in contact with the disease to keep it from spreading to other parts of your lawn.
First, be patient. Don’t tackle this task too early. Wait for your soggy lawn to dry out a bit. If you walk on a waterlogged lawn, you can compact it.
Use a leaf rake to gently lift the flattened, matted grass blades. Be gentle. You don’t want to tear up healthy turf.
Clear away old leaves, sticks, and any other debris that’s trapping moisture.
If the grass underneath the matted areas is dead, lightly rake the soil, apply grass seed, and cover with a thin layer of compost or topsoil.
You can head off spring lawn fungus with good preventive maintenance:
Fertilizer is your lawn’s food, and the right applications at the right times can help your lawn stand up to lawn diseases.
How?
When your soil becomes compacted, your lawn can't breathe. Its roots can't take in water or nutrients, which weakens your turf and opens the door for disease and weeds. Lawn aeration uses a machine to pull up plugs of soil, creating spaces for air and water to penetrate, which leads to healthier roots.
Aeration also breaks down thatch, that layer of dead grass and stems between your grass blades and the soil. Too much of it prevents important air and water from reaching your lawn’s roots and can encourage Idado spring lawn diseases.
Aeration is beneficial for Idaho lawns once a year.
Grass blades that are torn by dull mower blades are not only susceptible to spring lawn fungus, but they also help to spread it across your lawn by introducing it to healthy grass while it clings to the mower blades.
Sharp blades cut cleanly through grass, reducing the spread of disease across your lawn.
There are many things that can stress your lawn.
If you see unsightly patches of yellow or brown lawn, it might be fungus.
It could also be due to poor irrigation. Or bad mowing. Or drainage issues. Or too much pesticide. Or too much fertilizer. Or insects.
You get the idea. A lot is happening out there on your lawn.
We’d be happy to take a look, diagnose the problem, and help you get your healthy, green grass back.
Q: Why is my grass pink after the snow melted?
A: As we discussed earlier, this is probably snow mold, which appears as pink or reddish-brown matted patches when the snow melts. It’s often caused by heavy snow, poor drainage, or long grass in winter.
Q: Can snow mold kill my lawn permanently?
A: Don’t worry. Snow mold rarely kills a lawn permanently. It usually only damages the grass blades, allowing the turf to recover in spring. While gray snow mold is generally mild, pink snow mold can be more severe, potentially damaging your lawn’s roots and crowns. If that happens, you’ll likely need to reseed the damaged areas.
Q: How do I get rid of white powdery spots on my grass?
A: Those white powdery spots are probably powdery mildew, which we talked about earlier. This lawn fungus thrives in cool, shady, humid conditions. It often disappears on its own when the weather turns hot and dry.
Q: Should I rake my lawn if it has snow mold?
A: Yes, but go easy. Raking breaks up matted grass, improves air circulation, and helps your lawn dry out, which helps stop the fungus from spreading. But wait until the ground is no longer soggy, and rake gently so you don’t damage your grass.
Q: Does lawn fertilizer cause fungus in the spring?
A: Yes, too much fertilizer in the spring can cause lawn fungus or make it worse.
Fertilizer contains nitrogen, which is crucial for your lawn’s growth. But too much of it, especially the fast-release type, encourages rapid, weak growth that’s susceptible to diseases. So here’s a good reason to partner with a professional lawn care service, where experts will apply the right kind of fertilizer in the right amounts at just the right times.
Q: How do I tell the difference between lawn disease and winter kill?
A: Winter kill, when areas of your lawn are dead, usually looks dry, straw-colored and, well, dead. It’s often caused by ice damage.
But winter lawn diseases like snow mold look slimy, matted, pink or gray.
A quick tug test can help you tell the difference. Pull on a section of affected grass. If it pulls up easily, it’s probably dead. But if the roots are still firmly planted, the grass likely has just superficial disease damage.
Pink peonies are nice. Pink sandals are fun. But keep the pink out of your lawn.
Help prevent spring lawn diseases by keeping your lawn healthy in the first place.
Make it easy on yourself. Choose professional lawn care in Idaho Falls, Pocatello, Rexburg that bundles your yard’s most-needed treatments into one convenient, no-fuss plan.
Got a few minutes? That’s all you need to get started. Just fill out the form on this page, call us at (208) 656-9131 or read more about our services. Then, you can kick back and relax in your healthy, thriving yard.
Image Sources | Gray Snow Mold, Pink Snow Mold