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Regularly mowing your lawn promotes vertical growth and lateral density; it also provides the manicured look you desire. However, not all grass types are mowed at the same height, so you need to know your lawn type and what it requires.
One option is to pick a lawn height and mow your lawn the same year-round.
Another option is to mow your lawn at different heights at different times of the year.
The idea behind this practice is to start and finish short but have taller grass at the hottest time of the year (June – Aug) to promote root growth, keep more moisture in the grass, and aid in times of drought condition.
Mowing Height Ranges by Grass Type
Mowing Frequency and Consistency
Because most of us are weekend warriors, we tend to mow our lawns either weekly or every other week. Whatever you choose, try to remain consistent.
If periodically you are not able to maintain this schedule (rain, vacation, broken lawn mower, etc.), and your lawn gets really tall, you will want to avoid removing more than 1/3 of the leaf blade in one mowing.
This will stress your lawn and make it go brown for a short time. Instead, you will want to mow multiple times (wait about 3 to 5 days between mowing) to get the grass back down to the desired height.
If you have a mulching lawnmower, you should make use of it. Mulching provides free organic material for your lawn and saves you the hassle of bagging. However, mulching may require weekly mowing.
Because grass grows more in late spring and summer, you will be removing more cuttings at this time of year. A weekly mowing and mulching schedule will allow the cutting to be incorporated into your lawn seamlessly.
Mulching every other week in the late spring and summer may result in excess cuttings sitting on top of your lawn, which can be unsightly.
A WORD OF CAUTION FOR NEWLY SODDED LAWNS
A pre-emergent contains a chemical that prevents a weed from putting down roots. Because it is a root inhibitor, it can also negatively affect your new lawn, which is trying to establish itself by putting down roots.
If you successfully killed and removed your old lawn, including all the weeds in it, your newly sodded lawn should have relatively few weeds. It is suggested that you hand pick weeds out of your newly sodded lawn for the first season.