Will frost damage fresh cut grass if I mow right before the season’s first frost? Many of you will face this conundrum at least once in your turf maintenance career.

Frost Can Damage Fresh Cut Grass

What to do when your grass is tall enough to upset you yet the weather report forecasts a frost next week? This well-researched guide below answers this question.

Will Frost Damage Fresh Cut Grass?

Yes, frost will damage freshly cut grass whenever it comes within a day or two of cutting grass. Grass blades naturally undergo a lot of stress when they are mowed and shortened, in addition, frost does not allow them to recover from this stress and grow back as needed.

– Cutting Before Frost 

When you cut grass, you wound it. The rest grass blade is responsible for closing the wound and regrowing the cut part back again. Remember that it needs water and food from the soil, the right soil, air temperature, and plenty of sunlight to heal itself and recover from being cut.

Mowing before frost damages grass blades. need help to heal themselves The hard weather will stress them further. Frost freezes all grasses. They barely create enough food to survive.


Frost also freezes soil a few inches deep. Consequently, the grassroots also freeze over and cannot absorb the necessary nutrients and water.

Freshly cut frost-damaged grass is more susceptible to fungal and bacterial diseases. The moist and frosty conditions turn the roots rotten , and the blades become badly discolored.

– Reasons To Obstain from Mowing

Mowing in winter is pointless. Warm-season grasses stop growing in late summer.

Bermuda and Centipede grasses don’t require mowing till spring. Only frost makes cold-season grasses dormant. and continues to grow, albeit at a very slow pace.

We recommend waiting to trim cool-season grass in winter. Especially if the weather prediction forecasts frost within a week. If needed, give your overgrown lawn a quick cut at least one week before the first winter fall is predicted.

Cutting grass too low during dormancy is detrimental, so raise the mower blades. Only cut off one-third of the whole length one mowing. The surviving grass blades require two-thirds length to live and regrow.

– Consequences of Frost To Freshly Cut Grass

Frost may damage grass and destroy newly cut grass when temperatures dip below 32 degrees Fahrenheit. the grass cannot function and develop itself in these cold conditions. Note that the water running through the grass roots and blades will also freeze over.

The Cells burst and die under cold temperatures. . If the frost lasts longer than a few days, the grass is too weak to receive energy and develop, making recovery difficult.


You may see your grass become dormant or die. The impacted grass loses its green color becomes yellow or brown. The grass and leaves become dry and wispy. Dead grass patches show how readily the grass pulls up through the roots.

Frost also exposes freshly cut grass to fungal or bacterial decay. Your grass continues to rot under the frost entire winter. Late winter frost thaws reveal rotting and lifeless grass.

– Protecting Grass from Frost

After cutting your lawn, frost may come. Frost will cover your lawn, so at least leave it undisturbed Keep people and pets off of your yard until spring.

Fertilizing winter-dormant grass is a mistake. Give your lawn a thorough inspection Spring begins after frost. Roots must pull up dead spots.

Dead and dormant grass is harder to pull out by hand. Other frost-damaged grass you will need a fertilizer high in nitrogen Liquid fertilizers start growth and repair faster.

Remember to dilute the liquid fertilizer to at least one-third of its strength to protect your already fragile grass from getting chemical burns. Always water the grass first to hydrate it, then pour fertilizer over the whole lawn as evenly as possible.

– Lawn Care During Frost 

Just because your lawn has frozen over doesn’t mean you can leave your frosty grass alone. You will still have to take some important care steps to ensure the grass grows back healthier than ever in the spring.

Aerate the soil initially since regular usage compacts it. Winter frost further decreases grass and root airflow. Frozen soil will be hard to aerate by hand , so it’s best to borrow an aerator from your handy neighbor.


Salting the driveway and sidewalk snow is useful. There is no need to use salt on frozen grass because this salt will seep into the soil with water and mess with the pH of the soil.

When it’s cold but not frosty enough, winter is the ideal time to lime your grass and adjust its pH when needed. Grasses naturally need a pH around neutral to slightly alkaline to grow to their maximum potential.

When To Mow The Grass In Spring After Frost?

to mow grass in April when temperatures routinely top 40 degrees Fahrenheit. In summary, you must wait for a couple of weeks after the frost has thawed before cutting, and the weather has gotten warmer.

The grass must be allowed to recover from the winter frost by consistent watering, applying fertilizer, and exposure to warm sunlight before you cut it short.

Mowing grass requires timing, which many neglect. Grass cannot be trimmed at any time. Grass cutting temperatures vary. above 40 degrees Fahrenheit.


When the mercury dips below 40 degrees in your region, you must know it’s time to pack up your mower. You will experience a rapid growth spurt for warm and cold grass, mostly in spring and early summer. Warm-season grasses carry on growing taller even during the hot summer months.

Mid-spring to late summer is the best time to mow without harm. During severe winters, watch the weather forecast from mid-fall onwards . The time of the day when you cut grass is of utmost importance as well.

In addition, wet grass blades should never be cut because this only damages them and prevents healthy regrowth. It would be optimal if you waited until the grass was completely dry and no remains of dewdrops were present. Noon or late afternoon is the best time to carry out a grass mowing session, but remember to wear sunscreen while at it.

When Is Temperature Too Cold For Mowing Grass?

Mowing grass starts at 40 degrees Fahrenheit. . Many experts claim that you need to wait until temperatures rise upto 50 degrees Fahrenheit daily for several days at least. At temperatures below 32 degrees, the grass will not even survive.


This article concludes with a summary of frozen grass damage after mowing.

  • Yes, frost will surely damage freshly mowed grass if it occurs within a week of mowing.
  • After the frost, the grass will be yellow and wispy with brown dead vegetation.
  • Cutting grass below 40 degrees Fahrenheit hinders regrowth, making winter the worst season to mow.
  • After cutting, wait at least a week into spring to water and fertilize frost-damaged grass.

Related Questions

  • What happens if you mow grass with frost on it?

    Frost freezes grass blades. Walking or mowing a snowy lawn might snap the grass blades. When a large item pushes on frozen blades, expanding water molecules slice through the grass, causing considerable cellular damage.

  • When should I stop cutting grass?

    No Mow May
    Stop mowing in early May to let the natural plants on your yard develop and blossom, providing color and attracting pollinators.

  • Is it OK to mow grass before a frost?

    Mow your grass many times before the first frost. After it becomes dormant, trim your lawn before frost. By winter, your grass should be 2 1/2 to 3 inches tall.

  • Is it better to leave your lawn long or short for winter?

    Long grass is disease-prone. Wintergrass height should be 2–2.5 inches. This maintains grass short enough to prevent illness but not too short to stress in cold weather.

  • Is it better to cut grass at night or in the morning?

    Avoid mowing grass early and lunchtime. Even though heat and humidity are usually lower at dawn, cutting wet grass too early may create ruts, clump, settle, clog your mower, and harm your lawn’s roots.

Lawn Care Rapid City SD

Welcome to the most trustworthy and best lawn service Rapid City Sd team! We have been working for a couple of years and we have proven how we manage different types of yard maintenance services that our customers may need. From grass cutting service to lawn fertilization, you can entrust everything in us.

Welcome to the most trustworthy and best lawn service Rapid City Sd team! We have been working for a couple of years and we have proven how we manage different types of yard maintenance services that our customers may need. From grass cutting service to lawn fertilization, you can entrust everything in us.

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