Best Pre Emergent For Zoysia Grass. Do you own the Zoysia grass lawn? If you have them, then you already know how beautiful, thick, and healthy the lawn can be.
It has many great benefits. However, Zoysia grass also has a number of negative aspects as well.
One such negative aspect is in the spring months (March to May). The Zoysia grass lawn can get weed in areas or regions with cool spring weather.
One way to control weeds is to prevent the weeds to appear or emerge. Prevent the weed from growing roots and shoots.
That would be the time when the weed killer or herbicide comes in action.
Table of Contents
The use of pre-emergence herbicide for Zoysia
A herbicide is a pesticide used by farmers or growers to kill unwanted plants or weeds. The selective herbicide kills specific targets while leaving the wanted plants unharmed.
They interfere with the growth of the weed and based on plant hormones.
The pre-emergent herbicide is some kind of weed killer with the job to prevent weed seeds from germinating. It is very effective only before weeds appear.
How pre-emergence herbicide works
The pre-emergence herbicides work to contain weeds before they germinate. A pre-emergent treatment application creates a barrier of vapor that destroys weeds.
It will create a chemical barrier in the top layer of the lawn’s soil that coats seeds. It also prevents the weed from growing roots and shoots. It is mainly used to reduce the presence of crabgrass.
Pre-emergent herbicide is widely used in residential. Mixtures come in granular form. They are mixed with fertilizer.
The timing of your pre-emergent application is very important to their success. Planning an application is needed so those weeds can be controlled prior to their emergence from the soil.
If you do the application yourself, a broadcast spreader will work perfectly fine.
Benefits of pre-emergence herbicide for Zoysia grass lawn
- it works as your weapon against weeds
- permanent elimination of weeds
- targeting young weeds sprouts on the topsoil
- breaking the cycle of weeds growth
- easy to apply by spraying mix with water
- it can discourage weeds growth for weeks or even months
- the lawn requires less maintenance after application
There is no pre-emergent herbicide that can specifically kill all the weeds. Some pre-emergent herbicides kill a broad array of common lawn weeds. While others target specific weeds like crabgrass or chickweed or other weed.
According to Oregon University, to accurately kill all weeds, you must use 2 kinds of pre-emergent herbicide.
The first one is that can control grass weeds. The other one that can control broadleaf weeds.
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List of best pre-emergence herbicides for Zoysia grass lawn
1. Prodiamine 65 WDG Generic Barricade 65 WDG Pre Emergent Herbicides
[su_highlight background=”#ddff99″]This Prodiamine 65 WDG Generic Barricade 65 WDG is a broad spectrum pre-emergent herbicide for maximum weed control.
It is specifically for broadleaf weed killer and grass killer. You can apply this herbicide for fall and spring offering a long period of time crabgrass and broadleaf weed control.
It is a very effective solution for controlling annual Bluegrass. The ingredients including iron and fertilizer iron solutions.
The active ingredient is 65% Prodiamine. You can be sure that this herbicide can control weeds including Foxtail, Goosegrass, Crabgrass, Henbit, Knotweed, Chickweed, Spurge, and Annual Bluegrass.
Do not hesitate to purchase this pre-emergent herbicide for weed control on your Zoysia lawn.[/su_highlight]
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2. Southern Ag Surflan A.S.
[su_highlight background=”#ddff99″]This Southern Ag Surflan A.S. will control weed seeds and fit for warm-season grass: Bahiagrass, Buffalograss, Bermudagrass, St. Augustine, Centipede, Zoysia grass.
The application of this herbicide may last up to 16 weeks with only 1.5 oz per 1,000 sq. ft. It can be used for vines, industrial sites, landscape ornamental, non-bearing trees, and established warm-season turf.
This Surflan A.S. can control selective pre-emergence surface-applied herbicide. It is to manage and control many kinds of broadleaf weeds and annual grasses.[/su_highlight]
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3. DOW Snapshot 2.5 TG Granular Pre Emergent Herbicide
[su_highlight background=”#ddff99″]This DOW Snapshot 2.5 TG Granular Pre Emergent Herbicide can last up to 6-8 months control of grassy weeds and broadleaf. The application rate is about 2.2-4.6 lbs per 1000² feet. It is a very effective pre-emergent herbicide and you can immediately apply the herbicide.[/su_highlight]
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Water your lawn a few days after applying the herbicide. The water will allow the herbicide to spread deeper into the lawn’s soil.
There are a few natural/organic based herbicides but most herbicides are chemical-based. Before applying the herbicide, the amount of herbicide must be correct so it can be efficient.
It is very important to follow the direction of use. Read them carefully.
Weeds, weeds, weeds. They are a group of unwanted growth that can disturb the most perfectly grown lawn. They can create headaches and frustration for you, maybe your clients and also your crews.
Weeds’ appearance is not only bad and ugly but if they are allowed to spread. They can have a damaging effect on an entire grass lawn.
Weeds’ behavior, is to compete with grass for essential nutrients, water, and sunlight. Weeds can overtake a turf or grass lawn, then turn them into weeds lawn.
The frustration can be eliminated by controlling weed invasion. Preventing them when the weeds are still seeds, is the best way to stop the invasion.
When you see weeds emerge in your lawn, you can spend countless hours of pulling weeds by hand. It might not be effective since you have to use a lot of effort in your time and energy.
The best way to accomplish this effectively is by implementing a pre-emergent weed control program.
Types of weeds
We can classify weeds into two categories: broadleaf weeds and grassy weeds. Weeds are also classified as warm-season weeds cool-season weeds.
Different types and categories of weeds mean the different applications of prevention programs.
Pre-emergent herbicide products, often known and sold as crabgrass killer. They are only effective for controlling grassy weeds in the summer, such as goose-grass, crabgrass, and sand-bur.
They are not effective to control perennial weeds such as Florida be-tony, bahiagrass, dallisgrass, dollar-weed. And not effective against on winter weeds such as burr-weed, chickweed, annual bluegrass, or henbit, which are already growing.
Knowing this differentiation, the first step in your weed-killing program is to correctly identify the weed. This will help you correctly time your pre-emergent herbicide application.
Other advantages of pre-emergent herbicide
- The weed can be eliminated permanently. These pre-emergent herbicides are activated where the weed seeds sprout (in the top layer of soil). The formula stops the weed plant from growing. This pre-emergent formula can stop the cycle of regrowth of new weeds.
- You do not need to apply much amount of labor, such as pulling weeds by hand. Instead, it involved in applying either liquid or granular version of pre-emergent. The formula can be activated by applying water. Wait for at least 3 days and after that, they can soak into the ground. Depending on the concentration of it and the ingredient used, pre-emergent can remain effective in the soil for several weeks up to several months. This can be beneficial for you to do other productive gardening activities.
- Even if there are remaining weeds that manage to escape this treatment, it can be controlled with ease. Since the amount is not large enough to control.
- Because of the pre-emergent herbicide successive application, you do not have to worry about much post-emergent application.
When is the best time to apply a pre-emergence herbicide
The time of applying pre-emergent herbicide is the most important part when it comes to pre-emergent weed control. The most effective time for pre-emergent herbicides application is before the annual grass weeds emerge.
It would be ineffective when applying it too late. The exact date for the application would be March 15 and September 15.
It is the precise date before seasonal weeds make an appearance. The March 15 is for summer weeds and the September 15 is the winter weeds.
On March 15th, it is when average soil temperatures reach above 50 degrees Fahrenheit. These weeds are crabgrass, dallisgrass, goosegrass, and Johnson-grass.
They will emerge when the soil gets warmer and consistently over this temperature. On September 15, in the fall or winter, it is the pre-emergent herbicide application date that will limit any late weeds growth.
It is an exact science, right? Unfortunately, it is not.
Because the weather is unpredictable. Climate conditions vary year by year.
To accurately apply a pre-emergent herbicide, you must be coordinated with soil temperatures and the type of weed. For crabgrass weed, it will start germinating when the soil temperatures reach above 55 degrees Fahrenheit for five days in a row.
Weeds like Goosegrass must reach a temperature of 60 degrees Fahrenheit to start germinating. The climate factor is also can alter not only your application schedule but effectiveness as well.
Not enough rain or much rainfall will break the herbicide down or slow the activation down. When this happens, the weed seeds start to germinate.
That is why repeat applications would be necessary to improve and prolong weed control.
The proper management practices
A healthy turf or lawn shades the soil so that less sunlight reaches weed seeds. With less sunlight, weed seeds are hard to germinate.
While thick lawn will minimize the space available for weed seeds to become established. The best management of lawn health would be:
- Must manage the frequency and the height of mowing.
- Must manage the frequency of watering.
- Must manage the timing, rate, and analysis of fertilizing.
- Must do a soil test to know how much is needed for the soil for fertilizing.
You can also see the calendar here.
Lawn care for Zoysia grass
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For warm-season grasses, like Zoysia, the ideal occasions for standard month-by-month lawn maintenance are not the same as those for the cool-season lawn.
Zoysia is best planted in spring after all danger of ice passes and the grass enters its time for ideal development. Overseeding should be done at this equivalent time.
In view of Zoysia’s thick development tendency, it will, in general, create a cover. That layer of thick natural issue that develops at soil level.
Air circulation, done in fall on cool-season lawn, must be done in late-winter for the Zoysia grass lawn. This planning enables the grass to recover amid peak growth.
Zoysia lawns commonly require one inch of precipitation or water system every week. Sandy soils may require intense watering to hold moisture during summer warmth and stress.
Mow your moderate developing Zoysia grass as expected to keep up tallness of 1 to 1/2 inches.
Contrasted with numerous other garden grasses, Zoysia has generally low nitrogen requirements. Soil testing will uncover your yard’s supplement needs.
Prepare as indicated by the soil test result, however, spring and fall applications might be all you need. Zoysia grass lawn favors soil pH somewhere in the range of 5.8 and 7.0.2
The soil test will likewise affirm whether your lawn needs lime or other soil corrections to reestablish pH balance and improve supplement accessibility.
For some mortgage holders, Zoysia grass is their warm-season grass of decision. That is particularly normal where a dry season safe, low-upkeep, traffic-tolerant grass is the purpose.
How to mow the Zoysia grass lawn
Mow at 1.5 cutting height no more than 1/3 of the leaf off. Make sure to check the mower’s blade for sharpness.
Catch and remove clippings. Use a reel mower or a rotary mower.
Mow the Zoysia grass lawn at least 7 to 10 days interval.
How to water Zoysia grass lawn
Water the Zoysia grass lawn to supplement rainfall shortages only. Avoid fixed timer irrigation system.
Though it is drought tolerant, the Zoysia grass lawn does best when it receives approximately 1 inch of water per week. If rainfall occurs in a week, additional watering is not necessary.
If 1/2 inch of rain occurs, apply 1/2 inch by watering.
Do not overwater the lawn. Avoid run-off and standing water for any period of time.
How to fertilize Zoysia grass lawn
You have to do soil tests before fertilizing the lawn. The result will determine how to apply fertilizer.
Apply between 2 and 4 pounds of nitrogen per 1,000 square feet every year. That would be during the growing season.
Select a fertilizer that is labeled for use on Zoysia grass lawns only. Do not overfertilize that will burn the grass.
Too much fertilizer will result in an unhealthy lawn and increased disease risk. The iron application will improve grass color.
Pests and diseases
The Zoysia grass is relatively free from most pests. However, the grass is not without its faults.
The most common Zoysia grass problems are thatch. This problem caused by undecomposed organic matter.
The buildup forms above the soil line. Regular mowing helps to prevent thatch from building up throughout the lawn.
Mowing limits the amount of fertilizer used on Zoysia grass. If you discover parts of zoysia dying, this could be a sign of grub worms.
Brown patch is the most predominant Zoysia grass disease. The sign is patches of Zoysia dying off.
The dead patches of grass begin little but can rapidly spread in warm conditions. The identification of the diseases is by its distinct brown ring that encircles a green center.
Although brown patch may not be fully eliminated, keeping Zoysia healthy will make the grass less susceptible to the disease.
Fertilize only when needed. Water the grass in the morning after all dew has dried. You can control them by using fungicides available.
Leaf spot is another disease that comes during warm days and cool nights. The diseases are caused by overly dry conditions and lack of fertilizer.
Leaf spot creates small lesions on grass blades. This spot will distinct patterns.
A careful inspection of spotty areas of Zoysia dying may determine its actual existence. Applying fertilizer and watering grass deeply at once every week should help eliminate this problem.
Rust in Zoysia grass grows during cool, moist conditions. This disease presents itself as orange, powdery-like substance on Zoysia grass.
Use fungicides to treat rust. It may be necessary to retrieve grass clippings after or during mowing. Disposing of clippings to prevent further spreading of this grass rust.
Henry Kaswandi is graduated from University of Indonesia majoring History. After receiving the bachelor degree of History, Henry Kaswandi take the education to the next level by graduating from University of Indonesia majoring Information Technology. On daily basis, he writes article and review the product sold on Amazon. Before this, he was the Head of Information Technology Department at PT Indopoly Swakarsa Industry, Tbk and was the Head of Information Technology at PT Pratama Cipta Inaweb.