Most homeowners start mowing between early March and early May, but timing depends on more than the calendar. Your location, grass type, soil temperature, and spring weather all determine when your lawn is ready. Cool-season grasses need 45-55 degrees F soil temps, while warm-season varieties require 60-65 degrees F. Wait until grass reaches 4 inches and soil feels firm.
If you’re not sure if your lawn is ready for that first cut, let a local lawn care pro handle the guesswork and get your spring mowing schedule on track.
| Key Takeaways: |
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| • Timing varies by location and grass type: Northern regions typically start mowing late March to mid-April, while southern regions begin early to mid-March. • Soil temperature is your best indicator: Cool-season grasses need 45-55°F soil temps; warm-season grasses require 60-65°F before active growth begins. • Wait until grass reaches proper height: Let grass hit 4 inches before the first spring mow, then follow the one-third rule—never remove more than one-third of the blade length. • Spring mowing frequency increases gradually: Start with mowing every 10-14 days in early spring, then shift to weekly mowing. |
Several key factors determine when you should start mowing in spring—and there’s no one-size-fits-all answer. Your location, grass type, weather patterns, and soil conditions work together to signal when your lawn is ready for that first cut.
Location
The best time to cut the grass varies based on your location.
| Region | Coverage | Start Mowing |
| Northern (Cool-Season) | Pennsylvania to Northern California and everything north | Late March to mid-April |
| Southern (Warm-Season) | South Carolina, below the Texas panhandle, southern California, and everything south | Early to mid-March |
Transition Zone Considerations: If you live in the transition zone, the challenging middle band from Maryland through to northern California, your timing depends entirely on which grass type you’re growing. Cool-season grasses like tall fescue can start mowing in mid-March to early April, while warm-season varieties like bermudagrass can start mid-April to early May.
Read more:
- Lawn Care Calendar for Warm-Season Grass
- Lawn Care Calendar for Cool-Season Grass
- Guide to Growing Grass in the Transition Zone
Grass type
When your grass reaches the heights shown below, it’s time for your first spring mow. Remember to follow the one-third rule and only cut down to the recommended height. Mowing too early in spring, when the grass is still partially dormant, can damage your lawn and hinder the growth you want for summer. When in doubt, wait another week.
Cool-season grasses begin active growth when soil temperatures reach 45 to 55 degrees (around 55 degrees air temperature), typically requiring your first mow in early to mid-March in transition zones, or late March to early April in northern regions.
| Grass Type | Mow at Height | Cut to Height |
| Tall fescue | 3.5 to 4.5 inches | 2.5 to 3.5 inches |
| Kentucky bluegrass | 3 to 3.5 inches | 2 to 3 inches |
| Fine fescue and Perennial ryegrass | 2.25 to 4.5 inches | 1.5 to 3 inches |
Warm-season grasses begin active growth when soil temperatures reach 60 to 65 degrees (about 65 degrees air temperature), which usually means your first mow is in mid-April to early May in transition zones, or early to mid-March in southern regions.
| Grass Type | Mow at Height | Cut to Height |
| Bahiagrass | 4.5 to 6 inches | 3 to 4 inches |
| St. Augustine | 3.75 to 6 inches | 2.5 to 4 inches |
| Buffalograss | 3 to 6 inches | 2 to 4 inches |
| Centipedegrass | 2.25 to 3 inches | 1.5 to 2 inches |
| Zoysiagrass | 1.5 to 3.75 inches | 1 to 2.5 inches |
| Bermudagrass | 1.5 to 3 inches | 1 to 2 inches |
My tip: Before you make that first spring cut, check your mower blades. Dull blades don’t cut grass, they tear it, leaving ragged brown tips that make your whole lawn look shabby within a day or two. Either sharpen your blades or buy new ones if they’re chipped or dull.
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Weather conditions
Weather patterns in late winter and early spring are critical factors in determining when your first mow should happen. While soil temperature is the most reliable indicator, other weather factors influence grass growth and mowing safety.
Temperature: Cool-season grass actively grows when air temperatures reach 55 degrees F, and warm-season grass actively grows when air temperatures reach 65 degrees F. Cold snaps can delay mowing by a week or more.
Rainfall and soil moisture: Heavy spring rains make grass grow faster but leave soil too soft for mowing. On the flip side, a dry spring slows grass growth and can delay your first mow by several weeks.
Frost: Late spring frosts can sneak up even after warm weather starts. Never mow when you see frost on the grass. Frozen blades tear instead of cutting cleanly, leaving brown, ragged tips that let disease in. Wait until the frost melts completely and grass dries before you mow.
Best time to mow: Aim for a dry morning between 8-10 a.m. when grass is dry and temperatures are comfortable. Avoid the hottest part of the day or high humidity.
My tip: Wait 2-3 days after heavy rain so you don’t create ruts or compact the soil. Plus, damp grass clumps and sticks to your mower deck, turning your mower into an increasingly heavy brick that you’ll have to clean later.
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Soil conditions
Soil conditions like moisture, temperature, compaction, drainage, and fertility significantly impact your grass growth and when you should mow. If your soil is still soft and yielding underfoot, it’s too early to mow. Mowing on soft soil causes ruts, soil compaction, and damage to grass roots.
Soil temperature: This is the most important factor for determining when to mow. You can measure soil temperature by inserting a soil thermometer or instant-read meat thermometer 2-4 inches deep. Cool-season grasses need 45-55 degrees F while warm-season grasses need 60-65 degrees F to actively grow.
Soil moisture: Avoid mowing spring soils that remain soggy from winter precipitation or snowmelt. Wait until you can walk on your lawn without leaving footprints or feeling water squish beneath your feet, typically 2 to 3 days after heavy rain or snowmelt.
My tip: Watch for low lying areas, or around downspouts that stay muddy longer than the rest of your yard. Skip them or wait another day, or you’ll rut your lawn while you and your mower enjoy a surprise off-roading moment.
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What’s the best spring mowing schedule?
Creating the right spring mowing schedule depends on grass type, growth rate, and changing spring conditions.
Cool-season grasses: Mow every 10-14 days in early spring (March -April) then about once a week in late spring (May-early June). Set your mower to cut at 3 to 3.5 inches and don’t mow until grass reaches 4.5 to 5 inches tall.
Warm-season grasses: Typically, you’ll mow once every two weeks in early spring (March-April) and every 3-7 days in late spring (May-early June). Go with a height of 2 to 3 inches and mow when grass reaches 3 to 4.5 inches. This keeps you within the one-third rule.
Adjust your weather: Heavy rain speeds up growth, so mow more often. Dry weather slows it down, so wait longer between cuts. Watch your grass height, not the calendar. If your grass gets too tall, don’t cut it all at once. Mow at the highest setting first, wait a day or two, then mow at normal height. This keeps your grass from going into shock.
Leave the clippings: When you mow at the right height and frequency, clippings fall into the turf and break down fast. This puts nutrients back into your soil, and according to Cornell University, grass clippings provide up to 25% of your lawn’s fertilizer needs. It’s like getting one free fertilizer application out of every four. You’ll save time, money, and reduce your annual fertilizer costs by about a quarter.
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FAQs
Not too long. Let grass reach 4 to 4.5 inches before your first spring mow, then cut at the highest mower setting to remove only the top 1 to 1.5 inches. Don’t let grass exceed 6 inches or it will clump when cut, smother healthy turf, and create conditions for fungal diseases. If it gets too tall, mow at the highest setting first, wait a day or two, then mow at normal height.
Use an instant-read meat thermometer from your kitchen. Insert it 2-4 inches into the soil and wait 1-2 minutes for an accurate reading. Or estimate using air temperatures: track the high and low for three consecutive days, add each day’s temps together, divide by two, then average these three results.
Professional lawn mowing costs on average $48, but can run up to $207. The cost varies depending on factors such as lawn size, grass length, type of grass, accessibility, and lawn health. Check out our guide “How Much Does Lawn Mowing Cost?” to see what can affect your overall lawn mowing costs.
Get ready for the first mow
Spring lawn mowing doesn’t have to be a guessing game. Check your soil temperature, watch for consistent warmth, and let your grass reach the right height before that first cut. Follow the one-third rule, leave those clippings where they fall, and adjust your schedule as spring weather changes.
Mowing is an easy DIY task, but it’s time-consuming. Add in aerating, fertilizing, and spring cleanup, and it becomes a major chore. Lawn Love can connect you with local lawn care professionals who’ll expertly handle it all so you can enjoy your free time.
Related reading:
Sources:
- Iowa State University Extension and Outreach. “Mowing Tips for Spring.” Yard and Garden. April 2023.
- Mississippi State University Extension Service. “Lawn’s First Mowing in Spring.” Turf Tips Newsletter. March 14, 2011.
- Michigan State University Extension. “Mowing the Lawn.” MSU Extension Resources.
- Pennsylvania State University Extension. “Turfgrass Management Calendar.” Penn State Extension.
Main Image: Grass mower in a lawn. Image Credit: Ivan Traimak / Adobe Stock Free / License
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