How do I identify strange white patches and spiraled growths on my lawn?
Tall, spiraled white growths appearing among finer grass blades are usually caused by fungal diseases like powdery mildew or snow mold. This sudden growth disrupts uniform turf appearance and makes it difficult to maintain a healthy, even lawn without proper treatment.
What the numbers show
Counted from the threads quoted below. How we count
- Most of it landed at once — the busiest month was September 2026, with 11 people.
- It is not one crowd: 14 people on Reddit and 1 on Stack Exchange ran into the same thing.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Asking online communities for identification help2 people mentionedDid this help you?
- 2Searching online imagesDid this help you?
- 3Looking through previous forum questionsDid this help you?
- 4Spraying with metalaksilDid this help you?
- 5Hosing off the affected area with a garden hoseDid this help you?
- 6Manually wiping off the substanceDid this help you?
- 7Waiting for the weeds to die off naturally from mowingDid this help you?
- 8Hand-pulling the sprouts root and allDid this help you?
- 9Manually digging out the clumped grassDid this help you?
- 10Killing the affected area with herbicide and planting new seedDid this help you?
- 11Searching for potential causes like pests, fungus, low spots, or buried obstructionsDid this help you?
- 12Probing the ground with a screwdriver to test for buried objects or rocksDid this help you?
- 13Checking for window reflections or historical landscaping layoutsDid this help you?
- 14Waiting to see if it can be treated safely laterDid this help you?
- 15Applying specialized sedge killers like Sedgehammer or Empero once safety is determinedDid this help you?
- 16Using a box cutter to physically remove the growth and asking online forums for identification help.Did this help you?
- 17Searching online extension links and comparing reference photosDid this help you?
- 18Tried applying various herbicides including Sedgehammer, Quinclorac (Drive XLR8), and TZone SEDid this help you?
- 19probing the soil with a tool to check for buried objectsDid this help you?
- 20guessing between lawn diseases, mower errors, and environmental factorsDid this help you?
- 21Digging up the infested area and replacing it with topsoil and seedDid this help you?
- 22Looking up the plant online to match descriptions and characteristicsDid this help you?
- 23Pulling them out manuallyDid this help you?
- 24Using contact spray with herbicideDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“All I’ve done is water the lawn and I’m wondering what the next step is.”source ↗
“Anyhow, is this grass lol? If it is, what would my lawn care experts suggest?”source ↗
“It’s clumped like this all over the lawn. Seems like some years are worse than others. I use pre-emergent in mid March…. Had no effect.”source ↗
“What is this weed? I overseeded about a week ago so I’m not sure I can treat it.”source ↗
“If it's not creeping charlie, what is it?”source ↗
“Amongst the finer grass blades I'm seeing a lot of these... they're taller than everything else and the blades are sort of spiraled.”source ↗
“If anyone can help me ID it that would be great.”source ↗
“Can’t figure out why the unhealthy area. Not sure if pests or fungus. Did catch a couple of Voles… South of Boston”source ↗
“Could you help me figure out what's going on here?”source ↗
“The section of yard seems to be having some of the grass dying. But it's not in full patches that I think typically looks like grub damage.”source ↗
“This is everywhere in my neighbors yard. I’ve tried to help her. Someone thought it was yellow nutsedge - it definitely is not.”source ↗
“Have tried Sedgehammer, Quinclorac (Drive XLR8) and TZone SE over the last couple of months to no avail.”source ↗
“It grows fast and much taller than rest of her yard. No purple stalk. I’m kind of out of guesses lol.”source ↗
“Is this arc a disease? Our lawn service company was out on 9/21 to apply the "early fall" treatment of organic fertilizer and herbacide. This showed up on 9/28.”source ↗
“I over seeded 3 weeks ago, haven’t mowed yet and noticed a TON of these grass like stalks with little buds on the tip. Never seen them before”source ↗
“I'll check the ground around it and see if I find any rocks or anything under.”source ↗
“I'll check under the dirt and see if I can find anything.”source ↗
“Bro I literally just posted about the exact same plant 4 minutes ago lol”source ↗
“I was walking on my lawn and noticed this rust-looking stuff on my shoes. I'm based in Illinois. Have you had anything like that on your lawn? How did you treat it?”source ↗
“Recently, quite a number of white patches have appeared on one area of my lawn.”source ↗
“Found this outside on the base of my stucco and stuck to the turf. It was so firm, I had to use a box cutter to remove it. It also smelled like mushrooms. Any ideas?”source ↗
Where this came up
People with this problem also raised
- 7Why are there strange symmetrical patterns and holes in my lawn?
- 5Why is my grass getting bright lime green patches?
- 8Why are there unexplained brown spots in my zoysia lawn?
- 11Are yellow patches in newly installed sod dead or a fungus?
- 3Why are there bald spots in my grass?
- 25Is my dead lawn patch caused by grubs or fungus?