I have observed and counted large numbers of emerged St. Augustinegrass seedlings following sod harvest of some varieties (but not Floratam), and the numbers of seedlings are proportional to the seed production per unit area. In general, do not apply post-emergent herbicides to the lawn once the turf begins to green. However, with cooler nights and shorter day lengths, control can be quite difficult because of slow turf recovery during this time. Overall, proper water management, fertilization, mowing height, and thatch control are essential to curtail large patch and gray leaf spot problems. Late Summer (August): Fertilize with ½ to 1 pound of actual nitrogen per 1,000 square feet, depending on soil type, before August 15 using a high potassium fertilizer such as 15-0-15. Disease Control: The most common diseases that affect St. Augustinegrass during the growing season are large patch (formerly known as brown patch) and gray leaf spot. When applying insecticides for chinch bug control during the summer, rotate chemical families or mode of actions to reduce the chance of pesticide resistance. tallahassee lassie – posted 12 May 2005 12:35, Hmmmmmm,I guess I have learned something today.I grow several types of St.Augustine,but have never noticed that happen.I am going to observe my varieties closer to see.Any publications to support this?Thought it all was sterile.I have noticed the seed heads seem to be produced by the healthier grass.Thanks. Do not apply herbicides unless grass and weeds are actively growing and are not suffering from drought or heat stress; therefore, water the lawn thoroughly the day before application. For more information on aerification, see HGIC 1226, Turfgrass Cultivation and HGIC, 1200 Aerating Lawns. Contact the local County Extension office or the Clemson Home & Garden Information Center for weed identification and control measures. There will be small purplish spots on the leaves and at an advanced stage, the grass will have a scorched appearance. Copyright © 2020 Phil Busey Agronomy Consulting Inc. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Paspalum grass for lawn | Walter Reeves: The Georgia Gardener, Identification and History of Bitterblue St. Augustine – Turfgrass Producers of Florida, Identification and History of Bitterblue St. Augustinegrass. Need help…live in DFW sodded Palmetto S/A last year looked great…over seeded Winter Rye…mow yard looks awful. It grows well in hot, salty climates and can cope with drought. Be sure to use a sharpened mower blade. Wait to irrigate again until the lawn shows moisture stress. St. Augustine; Zoysia; Most lawn grass is made up of more than one variety of grass—offsetting the strengths and weaknesses of a particular variety. An application of a soluble iron product, such as iron sulfate or a commercial chelated iron, in between fertilizer applications, will enhance the green color without encouraging growth. Weed Control: A selective, annual grass and/or broadleaf weed control pre-emergent herbicide that is labeled for use on St. Augustinegrass and applied during late winter and spring will reduce many weeds the following summer. The principal variety, Floratam, is virtually 100% sterile, doesn’t even produce any seed, while dwarf varieties such as Seville produce abundant seed which is 70% or more viable. Irrigation: In the absence of rainfall, continue to water to prevent drought stress. For more information, see fact sheets: HGIC 2156, White Grub Management in Turfgrass; HGIC 2155, Mole Cricket Management in Turfgrass; HGIC 2488, Two-lined Spittlebug; HGIC 2157, Bermudagrass Mite, Rhodesgrass Mealybug, & Groundpearl; and HGIC 2487, Chinch Bugs. Starting a lawn with St. Augustine grass seed requires the same preparation as any other lawn seed. According to the University of Texas, this grass is native to the regions surrounding the Gulf of Mexico. This could indicate an iron or manganese deficiency due to soil temperatures lagging behind air temperatures, high pH soils, or high phosphorous levels. St. Augustine Grass Bermuda Grass; It requires at least 5 hours of direct sunlight to grow and thrive really well. Additionally, do not apply post-emergence herbicides when the turf is emerging from winter dormancy or when the summer temperatures are 90 °F or higher. St Augustine will produce seedheads but the seeds don’t grow. In my case the sections with them are very dense. If the grass in the footprints does not bounce back, then irrigate the lawn the next morning. If the soil stays saturated all winter, this can cause many other problems. A second application is needed approximately 8 to 10 weeks after the initial application to give season long control of annual warm-season weeds. If the bag is picking up soil, mainly sand, when the lawn is mowed, then the blade may need to be sharpened more often than once a month. I know of no way to prevent them. Fertilization: Do not apply nitrogen at this time. Fertilizer Calculations: To determine the amount of granular fertilizer needed to apply ½ pound of actual nitrogen per 1,000 square feet, divide 50 by the first number on the fertilizer bag. They are not all that common. St. Augustinegrass should be fertilized three times during the summer, as recommended below. St. Augustine grass goes dormant when soil temperatures dip down to 55℉ (12℃). Unfortunately, between the front and back lawn I probably have 2 to 4 different types of turf. Once nighttime temperatures fall below 70 °F, raise the mower cutting height ½ to 1 inch to allow more leaf surface. However, there can be exceptions. St. Augustinegrass is sensitive to certain herbicides, such as 2,4-D, so follow label directions for reduced mixing rates. However, this is not always the case. When the leaf blades wilt, turn a blue-gray color or when footprints remain visible after walking in the grass, the lawn is in need of irrigation. Localized dry spots or hot spots can be watered as needed by hand. Call 281-431-7441 for Help in Selecting the Best Grass Variety for Your Project Fertilization: Always fertilize and add lime or sulfur based on a soil test. Since it is fueled by moisture, it is important to maintain a rather dry condition in the lawn by employing proper watering practices, as well as providing adequate soil drainage. However, in the piedmont and midlands of SC where the turf is growing on clay soils, St. Augustinegrass is typically fertilized only twice during the growing season (early May and early July). A long-term approach is needed to correct either cause, but an iron product can be added to quickly enhance turf color between the spring and summer fertilizer applications. It combines grass seed, fertilizer, and a soil improver into an easy-to-use product that’s applied using a spreader. St. Augustine grass seed has not traditionally been easy to establish but new methods have made seeding a viable option. Be sure to not allow the lawn to stay excessively wet if the lawn has a clay soil. Turf weakened by disease in fall will be slow to recover in the spring; therefore, fungicide applications are needed to control disease before the grass goes dormant. “People get stingy with the water, especially when people are clamoring about a water shortage or drought time, and they’ll cut back on the water. Fertilizing with a micronutrient fertilizer, such as manganese sulfate, can alleviate manganese deficiencies. All recommendations are for South Carolina conditions and may not apply to other areas. Not true. Not so fast, tallylassie, St. Augustinegrass seeds have high germination, over 70% in my experience. That said, other weeds do produce seeds that grow, and it can be hard to tell the difference from a mower. See HGIC 1652, Soil Testing for instructions on how to properly submit a soil sample. Please see HGIC 2151, Gray Leaf Spot on St. Augustinegrass. If new turfgrass growth is encouraged by fertilization during the early spring, and it is followed by a late frost, this can result in significant damage to the lawn. Selective, post-emergent herbicides can be applied as necessary for control of chickweed, henbit, and other cool-season broadleaf weeds. The irrigation interval will vary from site to site depending on the environmental conditions at that site and soil type. Perhaps more frequent mowing would keep them from being so offensively visible. The added moisture in the soil will help keep the growing points of the turf warmer, preventing crown death. Weed Control: To control crabgrass, goosegrass, sandspurs, and other summer annual weeds, apply a pre-emergent herbicide early in the year. St. Augustine grass can be planted in a variety of soil types with a pH range of 5.0 to 8.5. St. Augustine is a warm-season grass that grows well in full sun and moist soil in warm, coastal areas. Apply a post-emergent herbicide as needed to control existing winter weeds. For best results, use a dethatcher with a 2- or 3-inch blade spacing set at a ¼-inch depth after the turf has fully greened-up. This turfgrass maintenance calendar may be used on turf grown throughout the state; however, management practices may need to be adjusted based on the year’s climate and the region where the turf is grown. It is the least cold tolerant of the warm-season turfgrasses. The plant is very finicky about producing viable seed….. and for that reason, seed companies have just about given up on it. However, as the soil temperatures start to climb, the yellowing should slowly go away. Katie. Ready-to-use mulch and fertilizer. That's the reason you will not find seeds available. See HGIC 1211, St. Augustinegrass for additional information on care and cultivar selection. Use a lawn mower with a bag attached or hand rake to collect and properly dispose of the turf material pulled up. Things To Do When Saint Augustine Lawns Begin Seeding. seed – posted 12 May 2005 12:18. When the turf begins to dry, it will appear to have a bluish hue. Plant St. Augustine grass during summer Being a warm-season turfgrass, St. Augustine grows best during summer. I think I’ll use the bag in the mower this time, just in case. Potassium is needed late in the growing season as the grass goes into dormancy for added disease protection and winter hardiness. Pre-emergent herbicides create a barrier that keep weed seeds from germinating. St. Augustine grass is a type of warm season grass that is popularly grown in the southern regions of the United States. Our lawn has some now and we like it a lot, but we’re having trouble finding seeds. Be careful not to set the mower too low, as it may scalp the lawn. Do not mow the lawn 3 days prior or 2 days after application. Producing a yearly maintenance calendar for managing turfgrass consistently year after year can be difficult in a state with such a diverse climate as South Carolina. The mower blade needs to be sharpened on a regular basis – usually about once a month or at least before the growing season starts. St. Augustinegrass is a wide-bladed, spreading, warm-season turfgrass that is adapted to the warmer regions of the southeastern United States.Joey Williamson, ©2018 HGIC, Clemson Extension. St. Augustinegrass will grow best at a pH of 6 to 6.5. Sandy soils do not hold moisture well since they drain freely and dry out quicker. Do not use a power rake with a 1-inch blade spacing, as severe turf injury may result. In heavily infested turf, the rounded areas may grow together and no longer appear circular. A soil test will help determine if a fertilizer containing phosphorous is required. St. Augustine varieties are available in sod, sprigs or plugs only. If possible, use a mower with a bagger to collect the clippings and remove the dead material left from winter dormancy… You cannot let it dry … Lime or sulfur may also be added if a soil test indicates a need. A sharp mower blade will cleanly cut the grass blades as opposed to tearing the leaves. In 3 months, recheck the soil pH and see what change was made. Sod farms loves pushing this because incentives matter; if you buy… What makes commercial seed production unprofitable are several factors, such as the difficulty of processing the seeds (the spikelets are embedded in sockets in a corky rachis), their slow “take” in competitive situations, and the fact that any seed produced from a vegetative planting will be all inbred seed, with depressed vigor. Monitor the winter rainfall on a regular basis, and apply water to the turf if no measurable rain occurs over a 3 to 4 week period. This is especially important if warm, bright days preceed days forecasted to be in the low 20’s or colder. South Florida Turfgrass Field Day and Expo. Contact the local County Extension Office, or the Home & Garden Information Center for positive identification and proper management strategies. I’d like to know because if they are seeds for anything else I’ll make sure to bag the clippings when I mow this weekend, tallahassee lassie – posted 12 May 2005 10:22. If a weed problem begins and the grass has begun to green with warmer temperatures, wait until the grass has fully greened-up before applying a post-emergent herbicide. Dull mower blades rip rather than cut the grass and make the grass more susceptible to diseases. Join our mailing list to receive the latest updates from HGIC. St. Augustinegrass (Stenotaphrum secundatum), sometimes referred to as Charleston grass, is a coarse-textured, spreading grass that is popular throughout warmer regions of the Southern United States. Maybe some day it will. Last frost dates and first frost dates can vary by several weeks from the coastal areas of South Carolina to the foothills of the Upstate. Irrigation: During dormancy, water the lawn to prevent excessive dehydration. Heavy populations can be reduced with appropriately timed insecticide treatments during this period. This will give the number of pounds of product to apply to 1000 square feet of turf. COVID-19 Extension Updates and Resources ... More Information », Factsheet | HGIC 1218 | Published: Aug 31, 2018 | Print | Download (PDF). Apply 5 lbs of pelletized sulfur per 1000 square feet of turf. Be aware, it could take several months for lime and sulfur applications to affect the soil pH. Take a look at the video below to see the process of how farmers sprig warm season grasses using slabs of sod. It is my goal to have just one type of grass, preferably the St. Augustine since it appears to be the one covering the most area.I couldn’t mow it for the last 3 weeks and now I have these sort of sticks everywhere that appear to come from the St. Augustine stolons. For more information, refer to HGIC 1207, Watering Lawns and HGIC 1225, Conservative Turfgrass Irrigation. This information is supplied with the understanding that no discrimination is intended and no endorsement of brand names or registered trademarks by the Clemson University Cooperative Extension Service is implied, nor is any discrimination intended by the exclusion of products or manufacturers not named. If the turf stays wet, circular yellow to brown areas may begin to develop and slowly grow in size. On first signs of seeding, apply these lawn care tips to your Saint Augustine lawn: Assuming the sticks I have ARE seeds pockets, I like the theory that seeds come out of healthy grass. Mowing: Continue to mow St. Augustinegrass at the normal mowing height until the weather starts to cool in the fall. Renovation: Replant large bare areas in May using sod, plugs, or sprigs (5 bushels per 1,000 square feet). To determine the amount of product required to apply 1 pound of actual nitrogen per 1,000 square feet, divide 100 by the first number on the fertilizer bag. Q: Please tell me where I can buy St. Augustine grass seeds. Once a lawn is prepared, St. Augustine grass seed is planted at a rate of 1/3 to ½ pound per 1,000 square feet in early spring or late summer. At this point, a fungicide application will be needed. Early Summer (May): Apply ½ to 1 pound of actual nitrogen per 1,000 square feet in early May after the lawn fully greens up. For more information on weed control, see HGIC 2310, Managing Weeds in Warm-Season Lawns. If this document didn’t answer your questions, please contact HGIC at hgic@clemson.edu or 1-888-656-9988. When the entire lawn appears dry, apply ¾ to 1 inch of water the next morning. Copyright © 2020 Clemson UniversityClemson Cooperative Extension | 103 Barre Hall Clemson, SC 29634864-986-4310 | Contact UsHGIC@clemson.edu, Centipedegrass Yearly Maintenance Program, College of Agriculture, Forestry and Life Sciences. The addition of phosphorous, the middle number in the fertilizer analysis, will need to be determined by a soil test. One way is to observe the lawn daily. Fertilization: Fertilization of St. Augustinegrass should be based on soil test results, and this is a good time to test soil. Spraying with liquid iron (ferrous sulfate) at 2 ounces in 3 to 5 gallons of water per 1,000 square feet or applying a chelated iron product will help to enhance turf color. Approximate application times are mid-February in the coastal and central areas and mid-March in the piedmont/mountain areas. Later, the center of the circle may start to re-green. Watering to prevent drought stress can help eliminate turf loss during the winter. However, fertilizers containing nitrogen should not be applied during this period. St Augustine will produce seedheads but the seeds don’t grow. After the lawn has become dormant, water as needed to prevent excessive dehydration. Sod farms cultivate new St. Augustine sod fields by planting small plantlets (plugs/sprigs) of St. Augustinegrass, which grow into a full field of sod in 8–12 months depending on the latitude of the sod farm. Insect Control: There are various insects and related pests that may infest St. Augustinegrass during the summer months. 3 steps to success: prep, apply, water. To help reduce disease problems, fertilize and lime St. Augustinegrass according to a recent soil test report. For more information on mole cricket or chinch bug control, see HGIC 2155, Mole Cricket Management in Turfgrass or HGIC 2487, Chinch Bugs. Soils in the upstate are typically acidic and rarely need sulfur applications but usually do need lime. This will allow the turf to become acclimated by the time the first frost occurs. Ever. 85-sq ft … Augustine grass does not have a viable seed but spreads through rhizomes. With Palisades Zoysia and the St. Augustine grasses, you will end up pulling those grasses out of your flower beds because they are so aggressive and they do spread so rapidly. For more information on weed control, see HGIC 2310, Managing Weeds in Warm Season Lawns. For more information on disease control, please see HGIC 2150, Brown Patch & Large Patch Diseases of Lawns. However, if a pre-emergent herbicide was applied late February to mid-March, postpone any cultivation practices that will disturb the soil until just before the next pre-emergent herbicide application date. About 4~6 inches tall, thick to the touch, with scales like seed pockets. This height reduction should be done just before the lawn greens up, which usually occurs during late April or early May. Be careful not to set the mower too low, as it may scalp the lawn. For St. Augustinegrass, consider dethatching when the thatch layer is greater than ½ inch. Clemson University Cooperative Extension Service offers its programs to people of all ages, regardless of race, color, gender, religion, national origin, disability, political beliefs, sexual orientation, gender identity, marital or family status and is an equal opportunity employer. Gardeners enjoy this grass type for its compressed grass blades that contribute a dense texture for lawns. Disturbing the soil after an application will allow weeds to emerge through this barrier. The general rule to turfgrass irrigation is to water “deeply and infrequently”. If possible, use a mower with a bagger to collect the clippings and remove the dead material left from winter dormancy. That said, other weeds do produce seeds that grow, and it can be hard to tell the difference from a mower. St. Augustine grass is usually dormant during the colder winter and fall seasons. Helps repair St. Augustinegrass 60% faster - Results 15 days after application vs. untreated control. There are horticultural books that say St. Augustinegrass is propagated vegetatively because it produces no seed. Apply sulfur only when the air temperatures are below 75°F. The higher rate may be chosen for those growing St. Augustinegrass on sandy soils with the lower rate for those lawns growing on clay soils. The mower setting should be between 2 to 2½ inches high. Insect Control: Any insects that were missed during the nymphal stage in the summer will have grown to a size where turfgrass damage is occurring. During periods of environmental stress due to high temperatures or a lack of rainfall, raise the mowing height ½ to 1 inch until the stress is eliminated. If the turf at the edge of the dying area shows a smoky brown, rotted appearance, it will be necessary to apply a fungicide treatment. See HGIC 1201, Fertilizing Lawns for more information. This will help to correct problems associated with poor infiltration and drainage. Thatch Removal: If a thatch layer becomes a problem, use a dethatcher or vertical mower to remove it. Just be aware that these lawn care practices will not stop a Saint Augustine lawn from seeding altogether, nor suddenly, but they will help in reducing the length of time that the lawn does seed. St. Augustine grass spreads both by rhizomes and stolons, meaning that it sends out runners both above and below ground. Contact the local County Extension Office or the Clemson Home & Garden Information Center for identification and control of weeds in the lawn. If either insect is observed, apply a lawn insecticide when damage becomes excessive. St. Augustine grass varieties do not produce a harvest-able seed. Lime or sulfur may be applied if recommended by a recent soil test. In most southern climates, St. Augustine grass is the coveted turf of choice, while Bermuda grass is an invasive nuisance. A chinch bug is a small black insect with silver wings that sucks plant juices from the stem. Spray sufficiently to wet the foliage, but do not spray excessively. “Keep it wet,” Orr says. Another method is to walk across the lawn late in the evening. An infestation may cause the turf to die, which will need to be replaced or allowed to grow back in. St. Augustinegrass is sensitive to certain herbicides, such as 2,4-D, not only during spring green-up, but also during hot summer temperatures. For more information, refer to HGIC 1204, Lawn Renovation. Potassium, typically known as potash, may be applied to enhance winter hardiness if a recent soil test indicates low to medium levels of potassium. Thanks for the fast response. If grubs (the white larvae of beetles, such as Japanese beetles) have been a problem in previous years, monitor them by cutting a square foot piece of sod on three sides and peeling it back. For more information on mowing, refer to HGIC 1205, Mowing Lawns. Irrigation: Water the lawn to prevent drought stress. Weed Control: Many winter annual weeds can be managed by applying a pre-emergent herbicide in September with a second application 8 to 10 weeks later. Disease Control: For disease control, especially large patch, it is extremely important to treat with fungicides during the fall months. For more information on weed control, see HGIC 2310, Managing Weeds in Warm Season Lawns. See the section on fertilizer calculations below to determine how much granular fertilizer should be applied. Is it TARR or just bad idea of Winter Rye? Repeat application in 10 to 14 days, if needed. Overseed a Thin Lawn. These combinations are found either as a seed mixture, or a seed blend. Monitor the turf on a regular basis during the growing season, especially during hot, dry periods. Need help: Weed control for ornamental perennial peanut (rhizomes type)? Therefore, it is important to monitor temperatures and apply the needed management practices based on that year’s climate. If the grass blades in the footprints bounce back up, then there is plenty of moisture in the turf. In the coastal and more Southern regions of South Carolina, this generally will occur sometime during April, but further inland, this may be as late as mid-May. Absorbs 6X its weight in water. If the damage is minimal, monitor the activity and wait before applying an insecticide. Large patch is a fungal disease that is active during warm, humid spring and fall weather. Damage is often more severe in sunny areas near driveways, sidewalks, or roadways, where the turfgrass is under more heat stress. A soil probe can be used to monitor soil moisture. You do not want to have Sapphire grass as your lawn. St. Augustine doesn’t need a lot of water, it just needs it consistently. If more than six grubs are found under the sod piece, apply a lawn insecticide labeled for grub control according to label directions. Ever. Nutrient Deficiencies: A yellow appearance during the growing season may indicate an iron deficiency due to excessive phosphorus and/or a high soil pH. Scotts® Turf Builder® Thick’R Lawn™ is specially designed to turn weak, thin grass into a thicker, greener lawn. Mole crickets, chinch bugs, spittlebugs, grubs, ground pearls, and nematodes can cause considerable damage. Alternatively, the lawn can be hand raked to remove the excessive dead leaf material from the lawn surface. As temperatures start to warm in late spring, monitor for mole cricket and chinch bug activity. If a soil test indicates a higher soil pH, sulfur can be applied to lower it. Aerification: Core aeration is the process of punching small holes into the turf and soil to alleviate compaction, allowing air to get to the root system. It is a medium- to high-maintenance grass that forms a thick, carpetlike sod, crowding out most weeds and other grasses. Dormancy conserves the grass’s energy and prevents damage due to … Clay soils, however, will hold moisture for a longer period of time. Monitor the lawn on a regular basis to assess the need for irrigation. Shop grass & grass seed and a variety of lawn & garden products online at Lowes.com. Sharpen the mower blade monthly or as needed during the growing season. Get free shipping on qualified St. Augustine Grass Seed or Buy Online Pick Up in Store today in the Outdoors Department. There was a time when St Augustine grass seed was being made available in limited quanities. AI Score. This is best done before the first frost. Summer weeds, such as spurge and annual lespedeza can be managed by using a post-emergent herbicide for broadleaf weeds sometimes referred to as a 3-way mix. The best way to install a St. Augustine grass lawn is to purchase grass sod from a high-quality sod dealer like Houston Grass South. When to Plant St. Augustine Grass St. Augustine grass grows best in the warmth of spring and summer, when high temperatures are normally 80-100 °F. However, the seed performed poorly and is no longer available. In the meantime, mow and bag the weeds. Important times to monitor the weather are during late winter or early spring when the turf is coming out of dormancy and early autumn when the first frost is forecasted. Questions about how to stop it annual weeds perform better when mowed at to! Per 1000 square feet of turf a yellow appearance may also be added if a fertilizer containing phosphorous required! Fertilizers containing nitrogen should not be applied basis during the growing points of the time first! Allow the turf to die, which leaves the clippings and remove the excessive dead leaf material from stem! Produce seedheads but the seeds don ’ t buy St. Augustine grass under more heat stress monthly as. 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To water “ deeply and infrequently ” list to receive the latest updates HGIC! Climates and can cope with drought go away clemson.edu or 1-888-656-9988 a bagger to collect the clippings to on!