Zoysia Grass: How to Overseed and Maintain It

Kelly C. Gamble


Close up of Zoysia grass blades
Zoysia grass can be a great selection for your lawn, but be absolutely sure to take certain care measures to keep brown patches from forming.

Zoysia grass is a warm-time turf from Asia manufactured of a number of species. This coarse grass— which thrives in central and southern states — is not shade-loving and prefers the sunshine.

Even now, even with the greatest care, drought and pest hurt can trigger grass blades to convert brown or go dormant. If extensive injury happens, and bare spots form, overseeding zoysia grass in the slide can help restore the turf.

To that conclusion, here’s what helps make zoysia mature patchy, how to overseed your zoysia garden, and how to assure the very best outcomes.

Brown patches in a zoysia grass lawn
Zoysia grass can turn out to be brown and patchy if selected pests or fungi are current. (Getty Photos Signature)

What Tends to make Zoysia Grass Patchy?

In advance of overseeding zoysia grass, you will want to discover the root trigger of the hurt. Drought is the typically leading issue, but pests such as Chinch bugs, Searching billbugs, and fungal pathogens like Rhizoctonia solani could also be culprits.

Here’s a breakdown of how pests and pathogens have an effect on zoysia lawns:

Close view detail of a Chinch Bug (spilostethus pandurus)
Chinch bugs start out harmful grass from one aspect and increase as populations boost. (Getty Pictures)

Chinch Bugs

Chinch bugs — the most widespread pests of zoysia grass — spread speedily to ruin key lawn places. These insects inflict damage throughout the sizzling and dry summer season months, and it is rough to distinguish their visits from drought outcomes. Nevertheless, their designs are predictable. Chinch bugs get started harming grass from one particular facet and extend as populations increase. As a outcome, hurt is the most significant along lawn boundaries, like sidewalks and driveways.

Hunting billbug weevil feeding on a plant stem
Searching billbugs feed on plant stems and grass blades. (Getty Pictures)

Searching Billbugs

Searching billbugs are most lively during the night and early early morning. Their harm is more widespread in mid- to late spring and early summer months, when billbug larvae bore into the zoysia’s lower leaf stem and prosper. The turning level arrives when rising larvae feed on stolons in the early summer time, and grass reveals signs and symptoms of yellow parts that at some point brown and die out.  

Green and yellow grass texture brown patch caused by the destruction of fungus Rhizoctonia Solani grass leaf change from green to dead brown in circle lawn texture background dead dry grass
Rhizoctonia solani, a soil-borne fungal pathogen, will cause massive brown patches in zoysia grass. (Getty Visuals)

Rhizoctonia Solani – Fungal Pathogen

The third most popular zoysia grass nuisance is Rhizoctonia solani, a soil-borne fungal pathogen. The big-patch signs surface in the fall and are most severe as zoysia grass advancement slows owing to amazing temperature. This fungal pathogen can affect patches ranging from 6 inches to numerous feet in diameter.

Close up of modern gas engine grass lawn aerator
Aerate your garden so your seeds can penetrate deeper into the soil.

How to Overseed Zoysia Grass — Straightforward Measures

Overseeding zoysia grass is needed to include bald lawn patches and make a wholesome garden. You should overseed lawns in the late spring or early fall as temperatures are favorable for seed germination. If you overseed in the tumble, unfold seeds at the very least 60 times in advance of the initial frost.

To get ready a zoysia garden for overseeding, comply with these measures:

Accumulate particles. The first move of seedbed preparing is taking away debris, stones, rocks, pinecones, straws or any other floor go over. Use a rake to gather and take away scaled-down parts of particles. If you are seeding a bare location, get rid of any dead grass to expose the soil.

Mow. Minimize the grass to about 1-inch tall, guaranteeing ideal seed-to-soil speak to. When grass is superior, seeds get stuck in the blades and might not get to the soil. Protecting lower blade top is required for the successful overseeding of zoysia grass.

Aerate. This consists of punching holes into the floor to loosen compacted soil. Adequate air circulation allows water to penetrate further to reach roots, and aerated soils can let for bigger seed-to-soil make contact with.

Dethatch. While aeration prepares the soil, dethatching prepares current turf. Thatch— consisting of dead grass below actively rising turf — accumulates in excess of time. It limitations drinking water, fertilizer and grass seed from achieving the soil. Even if the lawns are mowed and aerated, do not overlook dethatching right before overseeding zoysia.

Fertilize. Ahead of distributing seeds, check the soil for nutrient deficiencies and apply a fertilizer primarily based on recommendations from a soil examination.

Zoysia requirements much more nitrogen, very little to no phosphorous and a lot less potassium. Usually maintain in brain that the best Zoysia grass fertilizers will have large nitrogen articles. 

Distribute seeds. Zoysia demands 2 pounds of seed per 1,000 sq. ft for ideal overseeding. Work out the amount of money of seed necessary by dividing your lawn place by the encouraged seeding amount. 

Ordinarily, a hand spreader or force spreader is the most effective tool to distribute seed. Either a single will enable be certain that seeds are dispersed uniformly, so that revived lawn is equally coated.

Man fertilizing lawn soil
Fertilizing your garden will make grass blades thicker and give denser development. (Getty Photos)

So, you have overseeded your zoysia grass—now what? Below are some ideas.

  • Overseeded zoysia lawns require fantastic dampness to sprout seed. Initially, h2o each day right up until germination. The advised price is 1 inch of h2o for every 7 days, such as rainfall.
  • Recall: Overwatering draws in pests to the lawn. Get standard measurements of water for best effects.
  • Fertilization allows lawns prosper and indirectly can help to decrease the threat of insect destruction. Proper fertilization helps make grass blades thick and gives denser development. When there is a thick layer of grass above the soil floor, insects have considerably less entry to the vitamins located in the roots of the turf, and the garden is extra very likely to expand insect-absolutely free.
  • Mow the overseeded garden when grass gets to a top of 2 inches or far more. Under excellent conditions, you will start off to see progress in 14 to 21 times.

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