Zoysia Grass: How to Overseed and Maintain It


Close up of Zoysia grass blades
Zoysia grass can be a good alternative for your lawn, but be confident to take specified care actions to continue to keep brown patches from forming.

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

Continue to, even with the best treatment, drought and pest harm can cause grass blades to change brown or go dormant. If substantial hurt takes place, and bare spots kind, overseeding zoysia grass in the slide can help restore the turf.

To that stop, here’s what helps make zoysia develop patchy, how to overseed your zoysia lawn, and how to ensure the most effective final results.

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

What Helps make Zoysia Grass Patchy?

Prior to overseeding zoysia grass, you are going to want to recognize the root cause of the harm. Drought is the usually primary component, but pests this kind of as Chinch bugs, Looking billbugs, and fungal pathogens like Rhizoctonia solani could also be culprits.

Here’s a breakdown of how pests and pathogens impact zoysia lawns:

Close view detail of a Chinch Bug (spilostethus pandurus)
Chinch bugs start out damaging grass from one particular facet and extend as populations boost. (Getty Pictures)

Chinch Bugs

Chinch bugs — the most typical pests of zoysia grass — distribute fast to damage important lawn spots. These bugs inflict damage throughout the scorching and dry summer time months, and it is difficult to distinguish their visits from drought results. However, their designs are predictable. Chinch bugs start detrimental grass from 1 side and grow as populations raise. As a consequence, hurt is the most critical together lawn boundaries, like sidewalks and driveways.

Hunting billbug weevil feeding on a plant stem
Hunting billbugs feed on plant stems and grass blades. (Getty Illustrations or photos)

Hunting Billbugs

Looking billbugs are most active throughout the night and early early morning. Their destruction is a lot more widespread in mid- to late spring and early summer, when billbug larvae bore into the zoysia’s reduce leaf stem and prosper. The turning position will come when growing larvae feed on stolons in the early summer time, and grass reveals signs and symptoms of yellow parts that eventually 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, causes huge brown patches in zoysia grass. (Getty Images)

Rhizoctonia Solani – Fungal Pathogen

The 3rd most prevalent zoysia grass nuisance is Rhizoctonia solani, a soil-borne fungal pathogen. The massive-patch signs or symptoms surface in the fall and are most serious as zoysia grass expansion slows due to interesting temperature. This fungal pathogen can affect patches ranging from 6 inches to quite a few toes 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 Methods

Overseeding zoysia grass is needed to go over bald garden patches and generate a balanced lawn. You ought to overseed lawns in the late spring or early drop as temperatures are favorable for seed germination. If you overseed in the slide, distribute seeds at least 60 times in advance of the initial frost.

To prepare a zoysia lawn for overseeding, stick to these methods:

Collect particles. The initially phase of seedbed planning is eradicating particles, stones, rocks, pinecones, straws or any other floor go over. Use a rake to obtain and take out lesser pieces of particles. If you are seeding a bare location, clear away any lifeless grass to expose the soil.

Mow. Reduce the grass to about 1-inch tall, making sure acceptable seed-to-soil get hold of. When grass is superior, seeds get trapped in the blades and may possibly not get to the soil. Keeping very low blade height is obligatory for the profitable overseeding of zoysia grass.

Aerate. This includes punching holes into the floor to loosen compacted soil. Ample air circulation allows drinking water to penetrate further to reach roots, and aerated soils can permit for better seed-to-soil call.

Dethatch. Whilst aeration prepares the soil, dethatching prepares existing turf. Thatch— consisting of useless grass underneath actively rising turf — accumulates around time. It limitations drinking water, fertilizer and grass seed from reaching the soil. Even if the lawns are mowed and aerated, do not neglect dethatching ahead of overseeding zoysia.

Fertilize. Before distributing seeds, verify the soil for nutrient deficiencies and implement a fertilizer primarily based on recommendations from a soil take a look at.

Zoysia requires more nitrogen, small to no phosphorous and fewer potassium. Constantly continue to keep in brain that the finest Zoysia grass fertilizers will have higher nitrogen written content. 

Distribute seeds. Zoysia demands 2 lbs . of seed for each 1,000 square toes for optimum overseeding. Compute the volume of seed necessary by dividing your lawn place by the advised seeding level. 

Usually, a hand spreader or thrust spreader is the most effective device to unfold seed. Either one particular will aid assure that seeds are dispersed uniformly, so that revived garden is similarly included.

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

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

  • Overseeded zoysia lawns require great moisture to sprout seed. Initially, water every day until germination. The advised amount is 1 inch of water for every 7 days, which include rainfall.
  • Bear in mind: Overwatering draws in pests to the garden. Take normal measurements of water for optimum success.
  • Fertilization allows lawns prosper and indirectly assists to reduce the hazard of insect injury. Appropriate fertilization can make grass blades thick and presents denser expansion. When there is a thick layer of grass earlier mentioned the soil surface, insects have less access to the vitamins and minerals located in the roots of the turf, and the garden is more probable to mature insect-totally free.
  • Mow the overseeded lawn when grass receives to a top of 2 inches or more. Below best situations, you will start to see growth in 14 to 21 times.

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