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When choosing the best lawnmower height setting, the first thing you need to take into account is what type of grass you are growing.
|Grass species ||Set mower height to |
|Mow at this height |
|Annual ryegrass||1 1/2 to 2||2 1/4 to 3|
|Perennial ryegrass||1 1/2 to 2 1/2||2 1/4 to 3 3/4|
|Bahia grass||1 1/2 to 3||2 1/4 to 4 1/2|
|Bermuda grass, common||1 to 1 1/2||1 1/2 to 2 1/4|
|Bermuda grass, hybrid||1/2 to 1||3/4 to 1 1/2|
|Creeping Bentgrass||1/2 to 1||3/4 to 1 1/2|
|Hard fescue||1 1/2 to 2 1/2||2 1/4 to 3 3/4|
|Kentucky bluegrass||1 1/2 to 2 1/2||2 1/4 to 3 3/4|
|St. Augustine grass||1 to 2||1 1/2 to 3|
|Tall fescue||1 1/2 to 3||2 1/4 to 4 1/2|
|Zoysiagrass||1/2 to 1||3/4 to 1 1/2|
|Buffalo grass||1 to 2||1 1/2 to 3|
Grass species have a range of recommended mowing heights, and the chart above is only meant to be a guideline. Lawn experts recommend staying toward the upper end of the ranges given-especially during stressful conditions such as hot weather or drought, or if your lawn is growing in the shade. In cooler weather and under ideal conditions, you can afford to cut the grass a little lower. If you are unsure what type of grass species you have growing, cutting it at a height of 2 1/2 to 3 inches will work for the majority of grass varieties.
If you stick to the 1/3 rule, you should never have to worry about bagging the clippings, because the grass clippings will always be short enough to filter down to the soil's surface to decompose and recycle nutrients back into your lawn.
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I have read that it is best for your grass to set the lawnmower at it's highest setting. I have also heard just the opposite, that the lowest setting is best. So, I usually just keep mine in the middle. Is better have it higher or lower?
By Jess from Hillsboro, OR
It is best to use a high setting.
There are two factors you should keep in mind. One, the type of grass and two, the shape of your yard.
You are trying not to kill the grass or create bald spots. The highest setting will prevent both of these things from happening. I think it is safe to say that you did not kill any of the grass with your current setting. I would go with it.
It depends on your grass type, and the water available-a lot of people like to keep their grass a little longer to encourage strong, drought resistant roots-a grass root is only as long as it's blade.
Some grasses are more drought resistant than others, and some have cultural requirements that dictate the height-the best thing is to know what grass you have.
If it's a mix of different grasses, just mow it to a height slightly higher than your neighbours, lol-your lawn will retain colour better but won't attract disapproving looks or a letter from the HOA.
By the way, using a mulching blade, and cutting in the old 'checkerboard' pattern will scatter your clippings evenly across your lawn and save you the need for high nitrogen feeding. As the clippings break down they add nitrogen to the soil, and the green is absolutely beautiful! A little bit of extra work in the checkerboard cutting pattern, but well worth it for beauty and savings on expensive feeds. You can keep a bahia grass lawn looking stunning that way, and I can't think of a cheaper, more drought resistant lawn than one made of bahia. Watch that your neighbours or HOA aren't upset if you do have it, though, especially if they have the hugely pricey St Augustine or Bermuda grass lawns-if you're not careful, bahia will erm, migrate. :)