Reasons To Mow A Lawn Lower
People often consider mowing their lawns at a lower height for many reasons, for some it may be to try and create a smoother finish to their lawns to try and gain that “bowling green” effect, while for others they may be thinking that leaving the lawn for a longer period of time between mowings will reduce their work load by mowing less.
To determine whether this may be a good idea for us, let’s take a look through each reasoning for mowing lower and more importantly lets first look at why mowing heights and the length of leaf is so important to lawn health.
Why Is The Length Of Grass So Important
The green leaf of the lawn is responsible for taking in sunlight to the lawn, and like all other plants this sunlight then converts nutrients from the soil into food for the lawn via the process of Photosynthesis.
The longer the green leaf of the grass – the more photosynthesis occurs and the more food the lawn receives to stay healthy. Longer green lawn leaf will mean the grass grows faster.
The same is equally true for when grass leaf is cut short – less photosynthesis occurs and as a result the lawn receives less food and in turn grows much slower. If the lawn is kept too short for it’s grass type the sunlight available then it could eventually die altogether.
Mowing Grass Shorter For A Better Finish
Warm Season grasses such as St. Augustine, Zoysia and Bermuda can be cut shorter under certain conditions, this is when the lawn is in excellent health, is well maintained and when there is ample direct sunlight each day in warmer regions. If the lawn is in direct sunlight for most of the day then the shorter green leaf can is sufficient for ample photosynthesis to occur. However, if the lawn is subject to partial shade then it may not be a good idea to lower mowing heights.
Cool Season lawns should generally not be mowed at a lower height as their leaf height is vitally important to produce enough photosynthesis in the cooler regions where they are grown and there is less daylight hours available throughout the year.
Mowing Grass Less Frequently To Save Mowing Frequency
This is a really bad idea. This is how it works… The grass is left for a longer period of time, the longer the grass becomes the more photosynthesis occurs and the grass start growing even faster. This makes the thatch layer increase in thickness and raises the crowns of the lawn plant. When it’s mowed – all the green leaf is removed which means the lawn suddenly gets next to no food and cannot repair itself, this means very poor lawn health and possibly death for the grass. Even worse is if the crowns of the grass become scalped during mowing, because if the crowns are removed, the affected area will die immediately.
The Right Balance
Finding the right balance with lawn mowing heights is vital, while we can lower heights slightly during the Summer when light levels are higher, these must return to appropriate higher mowing heights during Spring and Winter. The key is to find and keep the right heights for your lawn type and which is right for your region.
How Often Should I Mow My Lawn
The Importance Of Mowing
Mowing lawns to many people seems like little more than a tedious chore which is constantly needing attention, the grass is getting out of control, which makes the home look messy, and it’s just another job we need to do regularly.
For the Lawn Care Professional however, he or she can share with you just how important mowing a lawn really is to so many factors of lawn care. This simple task, if done correctly contributes to not only a clean finish to the turf itself but helps it’s health, prevents weeds from taking hold or reproducing, and helps keep lawn diseases under control.
How Often To Mow
When we begin discussing how often to mow lawns, one of the most important factors to consider is that we need to mow it regularly enough so that excess thatch doesn’t occur in between mowings, which would result in a lawn being scalped when too much leaf material is removed in any single lawn mowing service.
When grass gets too long between cuts, the crowns of the lawn also raise up higher, the brown thatch layer raises higher, and the section of the lawns leaf which is actually the green part we like and use as our lawns also raises up higher. The problem is that when we then mow an overgrown lawn back to a regular and normal height, we risk cutting off all the green leaf which stops photosynthesis and food production to the lawn, we reveal the brown thatch layer, which is just plain ugly, and we risk cutting off the crowns of the lawn, which will result in the death of the lawn in the section affected.
Lawn Mowing Frequency
When choosing a mowing frequency for your own lawn, we need to aim for removing the least amount of green leaf in each mowing down to a minimum. The most recommended amount of leaf material to remove in a single mowing is never to remove more than 1/3 of the green leaf at any lawn mowing service. While the warmer weather will require more regular lawn mowing and as the seasons cool, lawn mowing regularity decreases.
All regions around the country will have different requirements when it comes to lawn mowing frequency, other factors will include how severe to cold or the heat gets in Winters and Summers, as well as the lawn type. Other factors apart from environmental factors then include human factors such as how often the lawn is watered, how often it is fertilized, how much sun it gets, and the overall health of the lawn as managed by it’s owners
If you’re new to lawn care or have moved to a new region, or have a new grass type, the best place to begin with choosing a lawn service routine is to check on what your neighbors are doing with their own lawn mowing frequencies. Check the properties which have the best lawns and are the same grass type as your own, and then take note how often it is being mowed, or simply just begin copying the neighbors lawn mowing routine and mow your own lawn as soon as you see his or her lawn freshly cut, and you’ll soon develop your own sense and routine of lawn mowing regularity for optimum lawn health.
Lawn Mowing Heights
Mowing At The Correct Height
Mowing heights vary greatly depending on many factors, and in choosing the mowing height which is right for our own lawn it’s important to remember that mowing our lawn at the correct height not only keeps it looking great and in optimum health, the correct height is vital in not damaging or even killing the very lawns we’re tending to with such great care.
Generally speaking and as a basis for this article on lawn mowing heights, the first factors to consider are what grass type you have, and which region you live in. Grasses are divided into 2 categories, there is the Warm Season grasses which include Bermuda Grass, Zoysia Grass and Saint Augustine, and then there are the Cool Season Grasses which include grass types such as Ryegrass and Fescues.
These two grass type categories are easily determined as to where they are best grown, i.e. Cool Season Grasses are best grown in cooler climates, and the Warm Season Grasses are best suited to the warmer regions.
Grass Types and Lawn Mowing Heights
Generally speaking, the Cool Season grasses will need to be maintained at a very high height, anywhere between 3 to 6 inches long, some lawn varieties will prefer a high leaf while others will prefer a shorter leaf length.
Where Warm Season Grasses differ again is that they can be cut at a much lower height, many varieties such as Bermuda Grass or Zoysia can be cut as low as half an inch if in a very warm climate and if it is well maintained. Although half an inch is not the optimum height for the average home lawn, we use this as an example to compare the differences between the two categories of turf, the Warm and Cool Season grasses.
For Warm Season Grasses, the better height for the homeowner may be between 1 to 2 inches, some of the newer soft leaf Saint Augustine lawns even look great with a nice long leaf up to 3 inches.
Another important factor when choosing the correct lawn mowing height for your lawn is to also judge the amount of direct sunlight it receives each day, and alternately, how much shade it is subjected to each day too. Another general rule of thumb for lawn mowing heights is that the more shade a lawn is subjected to during the day – the longer the leaf blade will need to be in order to keep the lawn flourishing. This is because it’s the green leaf which creates the photosynthesis process which uses sunlight to make it’s food supply, lawn will need more green leaf in the shade in order to get the same level of food as a low cut lawn which is sitting in full sun.
This same rule also applies in reverse, if a lawn is situated in full sun all day, it’s leaf must be maintained at a lower height in order to reduce it’s photosynthesis process, otherwise the lawn will produce too much food and will grow too fast. Which in turn increases thatch build up much faster and will require far more regular lawn mowing.
Mowing An Overgrown Lawn
Often we can come across an overgrown lawn which we are tasked to bring under control. There can be many reasons for this, perhaps we’ve started looking after the alwn for a neighbor or friend, or we’ve moved into a new house, or perhaps we’ve just been so busy lately that the lawn has paid the price for our hectic lifestyle and been neglected for some time.
Whatever the reason, we now have an overgrown lawn to deal with, for the novice it may just seem like a case of getting the lawn mower out of the garden shed, lowering the cutting height to the ideal we would like it at, and begin cutting. Unfortunately this can often be the worst thing of all to do as it can severely injure or even kill the lawn in a single mowing.
Avoiding Lawn Damage
The reason for the damage occurring is that an overgrown lawn has not only raised it’s overall height, it has also raised the brown thatch layer and the crowns of the lawn as well. If the lawn is now cut too short, the lawn mowing process may remove all the green leaf, which will then stop the photosynthesis process which supplies the lawn with it’s only method of converting it’s food source, which means the lawn may then die or severely struggle for a long time to recover. If the crowns of the lawn were removed during the mowing, then the entire lawn in the affected area will die off completely, this is because all the runners, thatch and green leaf all emerge from the crowns, with the crown gone – there is no possible way for the lawn to survivi in the affected area.
Correct Mowing Technique
In knowing these important factors in mowing long grass, the solution and process is now more easily seen.
The answer and the only correct method to cut long grass and to keep it maintained at a lower and more desirable height over the long term is to reduce the height of the lawn in stages. Beginning with the first lawn mowing, we only want to remove about a third of the green leaf. Sure, I can here people saying that the lawn will not look that crash hot once it’s first cut, and that is TRUE. However, the more important factor is that the lawn will remain ALIVE. At the second lawn mowing, we can reduce the height a little bit more, and so the process continues until we eventually reach the desired height we want to achieve.
The gradual lowering process of the mowing height guarantees the lawn stays alive, stays healthy, and at each mowing will gradually begin looking better and better at every lawn service until we have achieved the ultimate result. As the process of lowering the height of the lawn continues, the crowns and thatch layer of the lawn will also adjust themselves and lower themselves down to their optimum height.
The best time to use this process to lower heights of lawns is during the active growing seasons for our lawns which is during the Spring, Summer and early Fall months of the year. This is important because if the lawn is not actively growing, it cannot actively be repairing itself as the lawn repair is being undertaken. So the process will not work.
If you need to tackle a lawn which is overgrown and the weather is cooler, then the best option may be to keep the lawn mowed at a higher height until the next growing season arrives in the Spring.
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