Signs Of Over Watering New Grass

overwatered lawnIt is very important to look for signs of over watering new grass. A big misconception that frequent watering is a good thing for a lawn. Too much much water will cause more damage than help your lawn. Grasses like Bermuda and Zoysia grasses, need 3/4 inch to 1  inch of water a week. Water interferes with healthy grass growth and makes the lawn susceptible to weeds, pests and diseases.

1.) Fungus

Frequent watering keeps grass blades wet and promotes fungal growth.

  1. Mushrooms may grow in an over-watered lawn. Also lawns that are thin and weak.
  2. Reddish-orange grass is a symptom of rust fungus, which occurs in stressed lawns.
  3. Brown patches in the lawn & Brownish spots and brown, spiked fruiting structures appear on the leaf blades.

2.) Thatch Build Up

Over-watering prevents beneficial organisms from breaking down the thatch and causes shallow roots that leads to thatch buildup. Thatch is a layer of partially decomposed plant material, roots and stolons that forms a dense mat on the soil surface. If the thatch is more than 3/4 inch thick, it prevents oxygen from reaching grass roots and promotes a habitat for fungal and insect pests.  Remove thick thatch with a power rake or rotary mower attachment in early spring as part of your lawn maintenance.

3.) Weeds

Some weeds thrive in over-watered areas that are too wet for healthy grass growth. For example:

  1. Smooth crabgrass grows up to 6 inches tall and forms light green, shallow-rooted clumps that spread along the soil’s surface.
  2. Yellow nutsedge, which has light green, pointed leaves and grows up to 3 feet tall, spreads by underground stems, called rhizomes.

To promote dense grass growth, pull up weeds and water infrequently with enough water to moisten the soil 6 to 8 inches deep.

4.) Insect Pests

Lawns that are waterlogged have dense, thick thatch, and this provides a habitat for insect pests that protects them from insecticides. For example:

  • Army worms and cutworms create irregular, spreading bare patches as they chew and cut grass blades at the base.
  • White grubs, which are the larvae of May and June beetles and masked chafers, feed on grass roots and cause wilting and grass death.

If the ground feels spongy when you walk on it, or if you notice standing water or puddles in the lawn, you may be over-watering your grass. Runoff in the driveway, sidewalk or street is another sign of over-watering. When excess water moves nutrients out of the soil, the grass may turn yellow or light green.

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I’ve been researching and sharing lawn care and gardening info since 2010.  I’m no expert, but my neighbors think I am

Comments ( 2 )

  1. ReplyNelson M.
    I've seen mushrooms pop up occasionally after a lot of rain so it makes sense not to overdo it when you water your lawn. I did not know that too much water can interfere with insecticides. There are a lot of factors involved in lawn care which is why I enjoyed reading this blog and plan to check out some more on this site. I've spent a long time trying to get my lawn to look good. My neighbors and I take pride in keeping our property looking good so this was excellent information.
  2. ReplyProlificAshley
    This is really great, I never know over watering grass causes more damage than it help my lawn. Thanks admin

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