Zoysia, like deciduous trees, goes dormant after the first killing frost and will go off its green color until the ground reaches temperatures of about 50°F in the spring. Zoysia grass is a very durable and sustainable turf, but it has some downfalls, especially coming off our wet winter. What About Zoysia Seed? The Zoysia should be completely dead by the end of summer. 8. The grass spreads by above-ground stems called ‘stolons’ and underground stems called ‘rhizomes’. While you can lay Zoysia sod any time of year, it takes longer to root than other grass sods so it's best to give it plenty of time to get established before cold weather arrives in autumn. Fertilizer should be applied to Zoysia in 3 to 6 applications from spring green up through fall. During short drought episodes, the grass remains green. Zoysia japonica: This particular species was introduced into the United States in the late 1800’s and is commonly called Japanese or Korean lawngrass. Just make sure that the zoysia grass is 50 percent green or a … Turf within the affected area thins, and most of the shoots die. Slopes and Borders 4. Circular patches of tan or brown sunken turf 2 to 10 feet in diameter may appear as zoysia greens up, especially if there is extended rainy or overcast weather. These grasses are typically used for lawns or general turf areas. This is a normal, healthy process. In fact, the grass grows so dense, few lawn weeds are able to penetrate a healthy mass of established Zoysia lawn. Zoysia is a slow-growing grass that performs well in the heat and turns a light straw or tan in the fall. Atlanta Landscape Designer | Yard Maintenance Atlanta. Its growing season starts from the late spring till early summer. Zoysiagrasses in general and the denser the growth type (i.e. Avoid laying down lime within 4 weeks of putting a nitrogen fertilizer on the grass. In this area, I’d say I get about 8 months of green out of Zenith Zoysia. Here are some tips on how to control problem: So remember, more water and fertilizer does not help the problem. One thing to note is that Zoysia grass establishes more slowly than some other warm season lawn grasses, but as it slowly grows it forms a very dense carpet of grass beneath that feels lush under foot. Although zoysia tolerates both heat and cold well, when you should plant zoysia grass still depends on your region’s climate. ©2020 Walter Reeves / The Simple Gardener, Inc. All Rights Reserved. Likewise, don’t fertilize too late in the year, as … Winter causes dormancy for zoysia grass because it is categorized as a “warm season” grass. • Irregular weather patterns (very cold in mid December, warm enough in January to start breaking dormancy followed by more cold, then a late frost in 3rd week of April) • There are also genetic off-types of ‘Emerald’ Zoysia being sold. is a warm-season grass, meaning it stays green during the summer and tends to lose its color in winter. How long will the plugs last before planting? It might be caused by several things: • Scalping too early (soil temps need to be 60 degrees and steadily rising), • Applying Nitrogen too early (soil temps need to be 65 degrees or higher), • Thatch layer is too thick, preventing soil warm-up, • Large Patch disease. This is being caused by Zoysia Brown Patch. Unique’s Turf Grass Division has been using this type of fertilizer in our lawn applications this spring to help prevent this problem. 7. As temperatures increase, recovery begins but is slow. Zoysia grass is a very durable and sustainable turf, but it has some downfalls, especially coming off our wet winter. Use a slow-release nitrogen fertilizer that will last up to six months in the soil. For more information, here is a helpful link: During a drought, zoysia may appear to be less resilient than St. Augustine, but zoysia always recovers from drought with irrigation or rainfall, while St. Augustine may … As it was greening up this May, I noticed it had large dead areas where the grass never came in. Be careful not to set the mower too low, as it may scalp the lawn. ‘BK-7’ zoysiagrass looks like ‘Emerald’ but does not green up like ‘Emerald’ zoysiagrass. • There are also genetic off-types of ‘Emerald’ Zoysia being sold. As quirkyquercus said in a humorous way, the timing of spring green up and fall dormancy is primarily dependent on temperature. 9. Don’t scalp too early. Although seed is available, this grass is usually established through … Zoysia grass requires about ½ inch of water per week to remain green and about ¼ inch of water per week to stay alive in dormancy. An organic option to kill the Zoysia is to spread some black polyethylene over the Zoysia this spring.  Some areas in your yard may not be greening up as normal and may appear dead.  This is being caused by Zoysia Brown Patch. Some homeowners confuse drought tolerance with the ability to stay green without moisture. In season, it brings a rich, dark green color to a yard; it turns brown when it goes dormant as temperatures drop, but greens up again once warm weather returns. Louis area zoysia grass turns tan or brown in the fall and does not green up until spring (usually late May). This combination of above and below ground stems allows for the thick, dense growth and e… If possible, use a mower with a bagger to collect the clippings and remove any dead material left from winter dor… It can also handle partial shade. Four years ago I had zoysia sod placed in my front yard. Zoysia Brown patch is the most damaging disease to Zoysia. It is a hybrid between Zoysia japonica and Zoysia tenuifolia. ‘Emerald’), the more common scalping problems occur. The leaves of this grass are coarse in texture and are a light green in color. However, it can be distributed anytime of the year and still help the lawn if the pH balance is off. In fact, most grasses have the tendency to go dormant at some point in the year. It has a strong, deep root system that helps it to conserve moisture and nutrients during the stresses of summer. Zoysia does creep and it’s much more than 2 inches per year. Zoysia grass, like a deciduous tree, goes dormant after the first hard frost, when cold weather is moving in. Excessive moisture and high nitrogen fertility levels often lead to the outbreaks. One thing you can try is to scalp it down to 1″-1.5″ right now before it gets hot. If drought and heat persist, Zoysia will go dormant, but it greens up quickly when watered again. Zoysia grass conserves its energy until the temperatures are consistently warm, which often occurs in mid to late spring. It’s nowhere near as invasive as Bermuda, however. Although it is heat and drought tolerant, it can go dormant or die during extreme heat or drought, especially when the two are combined. Characteristically, it maintains a good winter colour and “fights back” weeds, once established. It took 2-3 weeks to come up, but before it had a good chance to grow, wild thick bladed grass took over and shaded the new grass and it didn’t do very well. Soil Conditions 3. A: Yes – in some years zoysiagrass won’t be completely green until June. The University of Georgia The following are common problems associated with zoysiagrass green- up that have been observed in spring. Once you see a problem it is very important to get on a fungicide program to prevent the spread. Dormant lawns green-up when environmental conditions improve. It has a medium green color with leaf texture about in the middle of the three main varieties. This will get rid of all the dead grass blades, bring it down to sticks and dirt, and allow the … This reduces the active nitrogen available to the plant and slowly feeds it consistently as it’s greening up. This paper by Dr. Clint Waltz explains it: ‘Emerald’ Zoysiagrass: Genetic Techniques Explain Common Observation. 1) Mowing height: This appears to be the most common problem associated with spring transition. Scalping helps get them out of the way more quickly. The mower setting should be around 1 to 1½ inches high. Once lows get over 70degrees for about a month your lawn should be green Late April for sure). Browse and purchase gardening books by Walter Reeves, plus select titles by other authors. ‘BK-7’ zoysiagrass looks like ‘Emerald’ but does not green up like ‘Emerald’ zoysiagrass. Zoysia naturally develops a deep root system, and it's very efficient at conserving moisture and resisting drought. Winter Dormancy 6. Meyer does well in colder climates north of the transition zone. Irrigated lawns are less apt to go dormant but run the increased risk of disease and insect problems. We cater to both residential and business owners and pride ourselves on highly knowledgeable staff who provide our customers with the quality service they deserve. This is the only species of zoysiagrass that has seed commercially available. This should be done just before the time of lawn green-up, which usually occurs during late April or early May. Come spring, Zoysia lawns are among the first to green up again. Agriculture lime is found in bags at garden centers, and is best distributed on the zoysia lawn in late fall or throughout the winter. Zoysia Empire (Japonica hybrid) It has a dark-green, medium-width and relatively fine leaf. New blades of grass that are starting to grow will get better sunlight and moisture. They are completely replaced. Use the lowest mower setting for this spring mowing. Good drainage is needed to remove excess water from low-lying areas. Mow your zoysiagrass the first time in the spring before it turns green -- around mid-April -- to clean out the old blades of grass, leaves and other debris. We also recommend cleaning your mower deck off after every use to prevent any kind of fungus growing under it that could be spread throughout the yard. Zoysia goes dormant after a week of hot, dry weather. The disease usually develops on lawns during periods of wet, overcast weather in late spring or fall. It also exposes the soil to more sunlight and warmth, helping to promote earlier growth and green-up. Cutting your grass on a regular basis is also helpful in reducing thatch build-up, which acts like a moisture sponge and can help spread the disease. The lush green color will fade. 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