A single one of these mistakes can set your lawn back come spring, so if you’re unsure of your own skills, consider hiring a local lawn care pro<\/a>.<\/p>
- 1. Cutting Grass Too Short Before Winter<\/a><\/li>
- 2. Applying the Wrong Fertilizer or Fertilizing Too Late<\/a><\/li>
- 3. Not Removing Leaves and Debris<\/a><\/li>
- 4. Walking on Frozen or Snow-Covered Grass<\/a><\/li>
- 5. Ignoring Snow Mold Prevention<\/a><\/li>
- 6. Using Salt or Chemical Deicers Carelessly<\/a><\/li>
- 7. Not Winterizing Your Irrigation System<\/a><\/li>
- 8. Not Watering or Overwatering<\/a><\/li>
- FAQ About Winter Lawn Care Mistakes to Avoid<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>
1. Cutting Grass Too Short Before Winter<\/h2>
One of the biggest mistakes people make before winter is scalping their lawn by mowing too short on their final mow. It\u2019s generally recommended to mow cool-season grasses<\/a> at 2 to 2.5 inches before winter<\/strong> and to\u00a0maintain the regular recommended mowing height<\/strong> for <\/strong>warm-season grasses<\/a>.\u00a0<\/p>
\u201cThe recommendation to mow short at the end of winter has been around for decades, mostly to reduce snow mold,\u201d says Paul Koch, chair of the Department of Plant Pathology at the University of Wisconsin-Madison. \u201cHowever, there’s really no evidence to support that lowering the height in late fall reduces snow mold in lawns.\u201d <\/p>
Lowering the height removes the green tissue that helps produce food to get your grass through the winter, he explained. It causes stress, making \u201cthe turf thinner the next spring and more vulnerable to weed germination.\u201d<\/p>
Ideal mowing heights vary, \u201cbut in general we recommend a height of 2.5-3.5 inches for cool-season lawn grasses,\u201d Koch says.<\/p>
Here\u2019s his explanation why: \u201cThis provides a nice combination of being high enough to promote dense growth of both leaves and roots and low enough to still not look too shaggy and to also mow off the many weeds that could grow at higher heights of cut.\u201d<\/p>
See Related:<\/strong> When to Stop Mowing the Lawn Before Winter<\/a><\/p>
2. Applying the Wrong Fertilizer or Fertilizing Too Late<\/h2>
Fall fertilization is critical for a healthy spring lawn, but timing and formulation matter tremendously. You don\u2019t want to skip fall fertilization completely, and you don\u2019t want to grab just any fertilizer off the store shelf and apply it whenever you have a free 15 minutes. <\/p>
The key is applying a winterizing fertilizer with higher potassium content in late fall for cool-season and transition-zone lawns, and in early fall for warm-season turfgrasses. Avoid fertilizing once the grass is fully dormant or the ground is frozen.<\/p>
You don\u2019t want to apply high-nitrogen fertilizer too late in the season as this encourages a flush of new growth right before winter. To help avoid this, Bryan Hopkins, professor and turf expert at Brigham Young University, recommends, \u201cat least half of each application should be slow-release\u201d fertilizer.<\/p>
See Related:<\/strong><\/p>
- When is the Best Time to Apply Fall Fertilizer?<\/a><\/li>
- How to Choose the Best Fall Lawn Fertilizer<\/a><\/li> <\/ul>
3. Not Removing Leaves and Debris<\/h2>
![\"A](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/07\/Raking-Leaves.jpg\")
Raking leaves. Photo Credit: maxbelchenko<\/a> \/ Adobe Stock<\/figcaption><\/figure> Before the snow flies, rake or mulch leaves, remove fallen branches, and clear away any toys, furniture, or equipment left on the lawn. <\/p>
Why should you remove leaves from your lawn? A thick layer \u201ccan suffocate the turf or increase snow mold, which can damage the turf over the winter,\u201d Koch says.<\/p>
\u201cIf you can’t see the grass leaves through the tree leaves, then it’s too thick,\u201d he says.<\/p>
But you can mulch your leaves to return nutrients to the soil. <\/p>
Make sure to mulch\/mow the leaves and spread them out \u201cso that green grass leaves are still visible through the tree leaves,\u201d Koch advises. \u201cThis will allow the tree leaves to work down into the turf canopy and provide added organic matter and nutrients without suffocating the turf.\u201d<\/p>
See Related:<\/strong><\/p>
- How to Rake Leaves<\/a><\/li>
- How to Clean Up Wet Leaves in Your Yard<\/a><\/li> <\/ul>
4. Walking on Frozen or Snow-Covered Grass<\/h2>
When snow is covering your lawn, you often don\u2019t think twice about cutting across the grass instead of staying on sidewalks and driveways. However, foot traffic can cause significant damage to frozen or snow-covered grass. <\/p>
Frozen grass is brittle and breaks easily when walked on, creating brown, dead patches that show up in spring. Walking across snow-covered lawns can also compact the soil beneath the roots and create ice layers that damage crowns.<\/p>
Stick to walkways, stepping stones, or gravel paths to avoid crossing your lawn during the winter. If you have to walk across it, change your route to prevent concentrated damage in specific areas or paths, or lay down sheets of plywood to disperse the weight and force.<\/p>
5. Ignoring Snow Mold Prevention<\/h2>
![\"snow](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/11\/snow-mold.jpg?wsr\")
Snow mold – a common fungal disease that thrives under snow cover. Photo Credit: noricum<\/a> \/ Flickr \/ CC BY-SA 2.0<\/a><\/figcaption><\/figure> Snow mold is a common fungal disease that thrives under snow cover, particularly when snow blankets unfrozen ground or falls during fluctuating freeze-thaw cycles. <\/p>
The two different types \u2014 gray snow mold and pink snow mold \u2014 create circular patches or matted, discolored grass that appears as the snow melts. <\/p>
Of the two, \u201cPink snow patch is a more damaging pathogen and can kill turf,\u201d says Tim Abbey, commercial horticulture educator at Penn State Extension.<\/p>
To prevent snow mold problems, Abbey recommends \u201cno late-season nitrogen applications, don\u2019t leave the turf high, and avoid an over-reliance on fungicides during the growing season.\u201d <\/p>
Abbey \u201cusually doesn\u2019t recommend fungicide applications for home lawns,\u201d even as prevention.<\/p>
Other ways to prevent snow mold<\/a> include: <\/p>
- Remove leaves and other debris that trap moisture. (See No. 3 above.)<\/li>
- Improve air circulation by pruning overhanging branches or thick shrubbery.<\/li> <\/ul>
6. Using Salt or Chemical Deicers Carelessly<\/h2>
Rock salt and deicers are great at melting ice on walkways and driveways, but they can cause big problems for your lawn and the soil. <\/p>
Here\u2019s why: Salt draws moisture out of grass roots and causes leaf burn, which appears as brown, dead strips along sidewalks and driveways. Over time, it can accumulate in the soil, creating long-term problems.
To prevent salt damage<\/a> to your grass, apply deicing products sparingly and only where needed. After the winter snow melts, thoroughly flush grassy areas close to any concrete with water to dilute the salt concentration and move it out of the root zone.<\/p>See Related:<\/strong> Signs of Salt Damage on Your Lawn<\/a><\/p>
7. Not Winterizing Your Irrigation System<\/h2>
![\"An](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/11\/sprinkler-repair.jpg\")
Lawn sprinkler repair. Photo Credit: Serge<\/a> \/ Adobe Stock<\/figcaption><\/figure> Failing to properly winterize your sprinkler system<\/a> can add up to expensive sprinkler repairs<\/a>, even in mild climates with occasional freezing temperatures. Water left in the pipes expands when frozen, which can cause burst pipes, cracked valves, and leaky sprinkler heads. <\/p>
To winterize your system, drain all water from the pipes, valves, manifold, and sprinkler heads, and insulate above-ground components and backflow preventers.<\/p>
8. Not Watering or Overwatering<\/h2>
Fall and winter watering are tricky, as both extremes can harm your lawn. <\/p>
Dormant grass needs less water, but since the roots are still functioning during dormancy, your lawn can still experience drought stress. <\/p>
On the flip side, overwatered lawns are more susceptible to fungal diseases, root rot, and snow mold.<\/p>
In cold climates, water thoroughly before the ground freezes to ensure adequate moisture reserves. When cool-season grasses are dormant and \u201cif winter is open and dry without much rain or snow, you should water 1 or 2 times a month from November to April,\u201d says Jim Klett, professor emeritus of Horticulture and Landscape Architecture at Colorado State University<\/p>
Klett offers these tips for watering your grass in winter: <\/p>
- When to water: <\/strong>\u201cOnly water when temperatures are above 40 degrees and soil is not frozen,\u201d he says. \u201cThe best time is midday when it is the warmest.\u201d <\/li>
- How much to water: <\/strong>Use cups to measure, and \u201cadd 0.5 to 1 inch of water. Check to be sure it is not running off. If so, stop watering, let it soak in, and then apply again to get that amount.\u201d<\/li> <\/ul>
In mild climates, maintain a regular watering schedule adjusted for slower growth and higher evaporation rates.<\/p>
See Related:<\/strong> How to Water Your Lawn in Fall and Winter<\/a><\/a><\/a><\/a><\/p>
FAQ About Winter Lawn Care Mistakes to Avoid<\/h2>
Can I Overseed Bare Patches During Winter?<\/strong>Overseeding during winter is generally a mistake in cold climates. Cool-season grass seed requires soil temperatures of about 50 F to germinate, and frozen ground prevents root establishment.
Should I Aerate my Lawn in Winter?<\/strong>No, it\u2019s usually counterproductive to aerate in winter. Frozen or waterlogged soil can damage aerating equipment and harm grass roots. Winter aeration also creates soil openings that expose roots to harsh cold and frost heaving.
How Often Should I Check my Lawn During Winter?<\/strong>It\u2019s good practice to check your lawn every 2 to 3 weeks during winter, even though it\u2019s dormant. Look for issues like snow mold, animal damage (including the presence of winter rodents like voles), and compaction from excessive foot traffic. After heavy snowfall or storms, check for broken branches on trees or drainage problems.<\/p> <\/div> <\/div>
Keep Your Lawn Winter-Ready With the Help of a Pro<\/h2>
![\"Well-maintained](\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/08\/austin2.jpg?wsr\")
A lawn maintained by a LawnStarter pro in Austin, TX. Photo Credit: LawnStarter<\/figcaption><\/figure> Avoiding these winter lawn care mistakes keeps your lawn healthy and ready for spring growth. From proper mowing heights to timely fertilization and sprinkler winterization, small steps now help prevent major headaches later.<\/p>
If tackling winter prep feels overwhelming and time consuming, hire a local lawn care professional<\/a> who can handle everything from leaf removal<\/a> to fertilization<\/a>, ensuring your lawn survives winter and greens up beautifully in spring.<\/p>
\t\t\t\t\t\tSources:<\/strong><\/p> \t\t\t
<\/span><\/div> \t\t<\/div> \t\t\tPaul Koch<\/a>, professor and chair, Department of Plant Pathology at the University of Wisconsin-Madison. Personal interview.<\/p>
Bryan Hopkins<\/a>, professor and Certified Professional Soil Scientist at Brigham Young University, Provo, Utah. Personal interview.<\/p>
Tim Abbey<\/a>, commercial horticulture educator at Penn State University Extension, York, Pennsylvania. Personal interview.<\/p>
- How much to water: <\/strong>Use cups to measure, and \u201cadd 0.5 to 1 inch of water. Check to be sure it is not running off. If so, stop watering, let it soak in, and then apply again to get that amount.\u201d<\/li> <\/ul>
- When to water: <\/strong>\u201cOnly water when temperatures are above 40 degrees and soil is not frozen,\u201d he says. \u201cThe best time is midday when it is the warmest.\u201d <\/li>
- How to Clean Up Wet Leaves in Your Yard<\/a><\/li> <\/ul>
- How to Choose the Best Fall Lawn Fertilizer<\/a><\/li> <\/ul>
- 2. Applying the Wrong Fertilizer or Fertilizing Too Late<\/a><\/li>