Best lawn practices

Questions residents have about lawn care

By Bob Dailey

Q. What’s the proper height to set your mower?

A. Different types of turf require different heights of mowing.

1. From April through September, St. Augustine should be mowed at the height of 3-4 inches.
2. Bermuda grass – 2 inches.
3. Coarse-bladed Zoysia (japonica) – 1.5 – 2 inches.
4. Fine-Bladed Zoysia (matrella) 1-2.5 inches.

Remember not to let the grass too tall (50% above the recommended cutting height). Too much off the top can stress the turf.

Q. I have trees in my yard, and the grass doesn’t want to grow well under them. What can I do?

A. Remember that grass is a plant too, and requires sunlight to convert energy to food. Of all the turf grasses that are adaptable to southeast Texas, St. Augustine grows best in shaded areas. However, if it can’t get any sunlight at all, it will cease to grow under your trees. If your grass is getting thin in under-tree areas, you might think of hiring an arborist to do some minor pruning on your trees to allow more sunlight in.

Q. Is now the right time to use a “weed and feed” product?

A. NO time is the right time to use weed and feed products. The proper time to apply the pre-emergence herbicide used in this product is before the weeds begin to grow…late February to early March. The proper time to fertilize or “feed” turf is mid-April. Applying them both at the same time is a waste of time and money. Applying “weed and feed” too early, and the fertilizer is dissipated or leached out of the soil by the time the grass needs it. Applying it too late, and the “weed” part has no purpose, because the weeds have already emerged and seeded.

Q. Why is the soil under my lawn rock hard?

A. Too much water, too many salt-based fertilizers and pesticides, too little organic matter in the soil are primary causes of hard soil. It has become compacted, making it harder for grass roots to penetrate. Pull up a handful of grass, roots and all. If the roots are shorter than three inches, your soil is too hard for the roots. Good St. Augustine, for instance, can grow roots as deep as at least six feet.

Q. What can I do to fix this?

A. Aerate your yard. Then add a half-inch of organic material (compost) across the top of your lawn. The compost will enter the soil and the aeration will help water and air to penetrate it (roots need air and water too).

Q. When is the best time to sod my lawn?

A. Springtime (April and May) or early fall (October) are the best times to lay sod. So, now’s a good time to resod. Remember to add organic material when you do resod.

Q. How often should I water my lawn in late spring and summer?

A. In The Woodlands served by Woodlands Water, residents can only water twice a week according to whether they have an odd or even address. However, that doesn’t mean you NEED to water twice a week. For 2017, experts and empirical data have indicated that, because of rain and high humidity, we needed to irrigate lawns only 12 weeks out of the entire year. And about half of that time, we didn’t need to irrigate more than one time during the week. The best way to gauge how much to irrigate is to have a rain sensor installed (they’re very inexpensive – about $20.) or install a Smart controller. Remember that Woodlands Water offers rebates for either of those.

Turfgrass Characteristics for The Woodlands

CharacteristicsSt. AugustineBermudaZoysia
Shade tolerance High Very low Low-medium
Water requirements Medium Low-medium Medium
Drought tolerance Good Very good Very good
Traffic tolerance Low High High
Cold tolerance Low High High
Disease tolerance High Low-medium High
Fertilizer needs Medium High Low-medium

The Woodlands Water Agency

The Woodlands Water Agency

2455 Lake Robbins Dr
The Woodlands TX 77380


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For all other inquires:
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