Post by fall50 » June 10th, 2011, 10:28 pm CVette wrote:Is there a post, sticky, FAQ, etc regarding Poa Annua & Poa Trivialis? It is often considered a weed of golf courses. Replied July 11, 2018, 9:28 PM EDT. Flowers are darker in color compared to annual bluegrass. Poa annua (annual bluegrass), Poa trivialis ... Like Poa annua, aggressive fall fertility should help the desired species fill in and this treatment may also be needed over a number of years. [ Post made via iPhone ] Top. ckc. The seed is also often missed during visual seed quality testing due to its similarity to the seeds of perennial bluegrass. Post by philcav7 » October 10th, 2015, 9:49 pm I know there are a couple of options, but what is the most effective selective or nonselective herbicide? The following may be given. The good news, as air temps climb into 80s, its growth almost stops! I have read it is a shallow rooted grass, could that be the reason my yard was ripped up so easily by the dog? Replied July 11, 2018, 9:28 PM EDT. Poa annua and poa trivialis do have their own unique characteristics, but they are often bundled together and painted with the same broad stroke under the name “poa.” A winter lawn that is mostly a mix of poa annua and poa trivialis (light green) with occasional fescue growth (dark green).. How Did This Poa Weed Get in my Lawn? Like; Save; rcnaylor. You know, if my quick math is right (no guarantees), while I have an 8000 square foot yard, I only need to spot treat 2 or 3 thousand square feet, tops for poa annua. 13 years ago. Go. There are a few cultural practices that can reduce the chances of weedy bluegrasses becoming established in your lawn, but they will not fix an existing problem. The best-known example of poa annua in golf is its use as the putting green grass at Pebble Beach Golf Links. You can no longer find it by July! Neither looks like P. triv or P. annua, so that's good! Replied July 12, 2018, 10:09 AM EDT. Like; Save; rcnaylor. Another option is to use herbicide in the fall, once the rough bluegrass has re-sprouted in the cooler weather. That looks like annua but as @green said keep your eye on it. fall50 Posts: 157 Joined: May 31st, 2011, 9:54 pm Location: MN Grass Type: KBG Lawn Size: Not Specified Level: Not Specified. If it doesn't then it's something else. The other two are Kentucky bluegrass, Poa pratensis, and annual bluegrass, Poa annua. Poa annua is a type of grass sometimes found on golf courses and sometimes used as the putting green grass. It is an invasive species in the Great Lakes region and was first sighted in 1843. From the Monsanto's pdf on poa trivialis in KBG, it looks like the product is devastating to poa while leaving the KBG unharmed--just what I need. It is often mistaken for a disease problem in Kentucky bluegrass. There is no selective weed killer for Poa Triv. With a little knowledge and a little persistence, poa annua control is possible. Due to the size of the seeds, Poa trivialis cannot be removed in the screening process that normally removes unwanted seeds and has contaminated a large portion of grass seed shade blends. They have pointed ligules 4–10 mm (3/16 – 3/8 in.) Grasses,Ferns, Mosses and Lichens of Great Britain and Ireland. Poa trivialis looks good and plays well most of the year. A: You are not going to like my answer. Poa annua grass can cause problems in lawns. Poa Trivialis in Tall Fescue Success Stories?? Lawns that are never fed usually don't do it as they can't muster the energy when they're kept short. Poa trivialis is much harder to control because it … The following may be given. Katana ® Turf Herbicide kills Poa annua, ryegrass, tall fescue, and the toughest broadleaf weeds in turf.Katana even works in cooler temperatures where competitive products may struggle. It is part of the grass family. They are soft and drooping. long, Loose, whorled green panicle, much branched, 15 cm (6 in.) pp. long. For these reasons it has become a common contaminant in shade grass seed blends and is likely to remain so for the foreseeable future. Once lawn grasses are actively growing, the annual bluegrass will appear to be a lighter yellow-green in comparison to the turf. The preferred herbicidal control method is to use a pre-emergent herbicide to prevent seed germination in fall, or non-selective herbicides. Trifolium repens is both common and characteristic. Creeping bentgrass is a vigorous perennial that will grow over the top of other cool-season lawn grasses. Poa Trivialis (aka Rough Bluegrass) is similar to Poa Annua but is harder to kill. Therefore, when you mow your fescue, the Poa Triv gets scalped because it grows 2x faster than the tall fescue. Pointed ligules 4–10 mm (0.2–0.4 in.) Fig. I'm looking for people who have had success getting rid of Poa Trivialis in Tall Fescue. Rough-sheathed blue grass is a non-native species from Europe found in all New England states, in low, moist to wet sites such as springs and stream shores. [3] http://grounds-mag.com/mag/grounds_maintenance_poa_trivialis_friend/, Photo Credits Poa annua by Rasbak (Own work) [CC-BY-SA-3.0 )], via Wikimedia Commons It features shallow roots and will develop a short seed head early very early in the season, usually around Springtime. Poa annua can be used on other parts of the course, too, and is sometimes the grass of choice for rough. Note that the bluegrass species, Poa trivialis, sometimes referred to as roughstalk bluegrass, is better adapted to shadier more moist conditions and usually becomes the dominant species over time in that environment. Poa trivialis dieout by Phil Stilson, New Garden Select Note the profuse, light-colored flowers. When poa annua dies in the summer, it leaves lawns with unsightly brown patches. It gets its common name from the fact that the sheaths (the base of the leaf that wraps the stem) are sandpapery. Is this poa trivialis or something else? [ Post made via iPhone ] Top. Mechanical. It leaves a thick, light green mat of grass which can choke out the lawn. You have some options for mechanical (non-chemical) management. T. Tidewater Greenworks LawnSite Member. It also thrives during cool weather, when most lawn grasses are dying back, which means that it invades the lawn at these susceptible times. One product called Tenacity can help prevent future outbreaks by acting as a … Re: Poa Annua & Poa Trivialis primer. Unfortunately it is often found unintentionally in shade grass seed mixes. Winter Grass, or Poa Annua as it is scientifically known, is a low growing turf grass. Poa Annua, or Annual bluegrass, is an annual weed that looks similar to a regular lawn grass for a short while. Poa trivialis dying out in warm weather looks like a fungal disease. Roughstalked bluegrass, P. trivialis, is a less desirable turf species that does well in moist, shaded areas but lacks heat and drought tolerance and is generally considered a weed. fall50 Posts: 157 Joined: May 31st, 2011, 9:54 pm Location: MN Grass Type: KBG Lawn Size: Not Specified Level: Not Specified. Post by fall50 » June 10th, 2011, 10:28 pm CVette wrote:Is there a post, sticky, FAQ, etc regarding Poa Annua & Poa Trivialis? Weed grasses are among the most difficult weeds to treat and control in lawns. They are everywhere and difficult to eradicate, but you can do it with some long term work. [1] With regular control measures, annual bluegrass can be contained but is rarely eliminated. Answered by UME Home and Garden Info Center This question is grouped with. It has shallow roots, and develops a short seed head early in the season. If this grass takes hold, it can be extremely difficult to remove. Poa trivialis (Rough Meadow Grass) Plants have creeping stolons and are sometimes purplish in colour. Finally, proper rates and timing of fertilizer applications will help strengthen your lawn while not overly stimulating undesirable weeds. Anonymous Guest. This weed grass is actually intentionally used in some applications as a winter overseed [3] (it makes a good winter putting surface for golf greens). The »flowering« herbs form a goodly array. The seedlings grow throughout the fall and then flower the following spring. Poa trivialis looks good and plays well most of the year. Thread starter MDMallard; Start date Apr 26, 2018; Prev. By June, the leaves turn brown and it looks like its dead! It spreads by stolons and forms dense, thick patches. Is glyphosate they way to go, or is there something better? Controlling rough bluegrass in a shady, damp locale likely is impossible, as it will outcompete other turfgrasses. It would make a decent turfgrass -- except for one BIG problem. Unlike annual bluegrass, rough bluegrass just appears to be gone. Even worse, there are not currently any selective herbicidal controls available for rough bluegrass. It produces many distinctive, light-colored flowers per plant and can do so even when mowed very short. Once you learn how to identify them you’ll never see lawns the same again. Poa Annua, Poa Trivialis, and Poa Pratensis (Kentucky bluegrass) are the most common in this region. The difficulty arises in the fact that many herbicides that will kill these weed grasses will kill lawn grass as well. C-114. Winter Grass is widespread in Australia and spreads throughout the Winter months. Because these weeds are so widespread, constant monitoring is required to keep them from becoming a problem again in your lawn. A lawn care professional can diagnose poa annua, which is known for its lighter green color, shallow roots and seed head. If the plant in question develops a large number of seed heads then it's annua. 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