Skip to main content

Here’s everything you need to know about lawn care this fall

Helpful tips for caring for your lawn this fall

The details make all the difference when it comes to lawn care. Some homeowners are content to mow the lawn when it grows too high, and perhaps water it during dry weather. This is enough to keep your lawn alive, but not enough to make it thrive. Fertilization, strategic mowing, and planting native grasses or ground covers can make a big difference in your lawn's appearance, but so can changing your care to fit the seasons. Just like any other plant, what your grass needs to thrive will change along with the seasons.




1 hour

What You Need

  • Lawn mower

  • Core aerator

  • Grass seed

  • Pre-emerge herbicide

After an intensive growing season, your grass is ready for a change. Warm season grasses will begin to go dormant to save energy for spring, while cool season grasses will be putting out new growth. As your lawn enters this transitional period, there are several things you can do to ensure it thrives. Not sure what this entails? We have the answers! Here's everything you need to know about lawn care in the fall season.

Person pushing a lawn fertilizer spreade
The Toidi / Shutterstock

Boost fertility

Whether you have a warm season or cool season lawn, fall is prime time for fertilization. Cool season grasses need a fresh application of nitrogen-rich fertilizer to thicken up the foliage. Warm season grasses benefit from a final feeding two months prior to the first fall frost date. This will boost stores for winter and ensure a faster transition when the weather breaks in spring.

Hands full of fallen leaves
Jarun Permsup / Shutterstock

Leave the leaves

An often overlooked part of soil health is the free lawn food that falls from the trees. Fall leaves can boost lawn fertility and add large quantities of beneficial organic matter to the soil if you leave them in place, but don’t let them smother the lawn. Here's what to do.

Step 1: Mulch the leaves with a lawn mower.

Step 2: Make sure at least half an inch of grass is visible underneath the leaves. If the leaves are too thick, they may smother the grass.

Lawn sprinkler close-up
komkrit Preechachanwate / Shutterstock

Adjust irrigation

Don’t let the cool, crisp autumn air fool you, it’s dry out there. If you aren’t getting rain, your lawn is thirsty. As long as it’s warm enough for the grass to grow, it needs about an inch of water per week from rainfall and irrigation combined. Insufficient water leads to slowed growth, but more importantly feeder roots may be damaged. So keep the sprinklers at the ready and add a little water during dry spells.

Cupped hands gently scattering grass seed
Dean Clarke / Shutterstock

Rejuvenate cool season grass

Hot summer weather is stressful to cool season grasses. If they’re damaged, they don’t have the capacity to regrow easily. When the heat subsides, take action.

Step 1: Aerate your lawn with a core aerator a few days after heavy rain. Doing so also prepares the soil surface to replace thin or dead patches by overseeding, loosens compacted soil, and improves airflow to the roots.

Step 2: Apply grass seed starting four to six weeks before your first frost.

Step 3: Keep your seeds moist by lightly watering them daily for the first two weeks.

Step 4: Avoid mowing the lawn for the first month after seeding.

A person mowing the lawn with a black push mower
NinaMalyna / Shutterstock

Prevent cool season weeds

Those who don’t plan on seeding in the fall can apply pre-emergent. This class of herbicide forms a chemical barrier at the soil line, preventing seed germination of cool season annual weeds like Poa annua, chickweed, and henbit. The granules are easy to apply with an ordinary lawn spreader, and are activated by rain or irrigation. However, these products also kill grass seeds and young seedlings, and shouldn’t be applied the same season as seeding.

A person mowing their lawn
Daria Nipot / Shutterstock

Mow until the grass stops growing

Whether your lawn is made up of warm season or cool season grass, it isn’t helpful to let it remain long through winter. Here's how to properly mow your lawn through fall and into winter.

Step 1: Mow your grass at regular intervals until it stops growing for the season. Doing so will make it more resistant to winter damage and mold problems. Plus, the shorter grass will look better as it emerges next spring.

Step 2: Only cut one-third of the total height of your grass, leaving two-thirds to continue growing. Cutting grass shorter than this causes stress, which leads to a patchy lawn.

Step 3: Slowly decrease how often you mow your lawn as the season progresses. The grass will grow much slower during winter, so your mowing should slow to match it.

grass color changing gray snow mold
Photowind / Shutterstock

Watch for fungal infections

Fall leaves, less light, and damp weather are the perfect environment for certain lawn fungal infections. When you think of fungi, mushrooms might be your first thought, but mushrooms aren't the biggest threat to your lawn. Instead, watch closely for signs of snow mold, which thrives in the fall. You can prevent snow mold by applying a preventative fungicide, Additionally, removing dead material that the mold can feed on (such as excess leaves, thatch, and grass clippings) and aerating your lawn to improve drainage can help.

Snow mold typically forms during fall and winter, but you might not be able to see it until spring if your lawn is buried under snow. Taking preventative measures in early fall can save you some trouble down the road!

Editors' Recommendations

Mark Wolfe
Former Digital Trends Contributor
Mark Wolfe is a freelance writer who specializes in garden, landscaping, and home improvement. After two decades in the…
Growing lavender from cuttings: Everything you need to know
Find out how to grow lavender cuttings
Lavender flowers clustered together

Lavender is a beautiful and useful flower. Whether fresh or dried, lavender's smell, taste, and color can brighten any room, baked good, or beverage. It’s scent is also great for stress relief, both in dried potpourri and as an oil. It’s only natural to want to fill your garden with it, especially since it is low-maintenance and attractive to pollinators. What if you only have one plant and you don’t want to wait for seeds, though?

Read more
How to fix yellow spots in grass so your yard is the pride of the neighborhood once more
Get your grass back to its gorgeous green color
A brown circle of dead grass

One day your lawn looks great. The next day, you're looking at your yard and asking yourself how to fix yellow spots in the grass. Yellow patches can be caused by several things, but thankfully most of them are easy to treat or prevent. This simple guide on how to fix yellow spots in grass will break down the causes, preventative steps, and treatments you need to know to keep your lawn healthy.

Read more
How do you care for a peace lily indoors? It’s easier than you think
Caring for your peace lily so it thrives in your home
A potted peace lily displayed on a desk

Peace lilies are a popular houseplant known for their elegant white blooms and dark green leaves. They're said to bring a calming sense to a space, so much so that they’re often given as sympathy gifts.

These plants even have a reputation for helping purify the air. Peace lilies are native to the tropics, which means they prefer warm, humid conditions. Chances are you don’t live in the rainforest, though — so how do you care for a peace lily indoors? It’s easier than you might think!

Read more