Grassy Weeds

Grassy Weeds

Weeds – By definition, is an undesirable plant.  You may have a weed in one state, but that same plant could make a desirable lawn in another state.

  • Grassy weeds tend to take more of an effort than your traditional broad leaf weed. They either require added herbicides or it could require glyphosate (RoundUp), which will kill even the good grass.

 

Roughstalk Bluegrass

  • Type of perennial bluegrass.
  • Usually comes in bluegrass sod or cheap bluegrass seed.
  • Comes up early spring.
  • Lime green, with long, burgundy colored stems.
  • Grows in patches.
  • Goes dormant in the summer, but will come back annually.
  • Solution: RoundUp before it goes to seed.

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Annua Poa

  • Another annual bluegrass, but this one can be prevented.
  • Tends to come with bluegrass sod or cheap seed.
  • Comes up early spring.
  • Light green in color and grows in patches.
  • Goes to seed like most types of grass, but the seed heads grow low, making it difficult to mow. The white seeds head can be an eye sore, especially in a lush green lawn.
  • As summer comes, the light green patches die off, turning yellow, making it even more of an eye sore.
  • Bi-annual weed (spring and fall).

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Annual Rygegrass

  • Found in a contractor blend of seed.
  • Used for its quick growth, both germination and growth can happen within 2 weeks.
  • May be good if trying to sell a property quickly or for non-residential purposes.
  • If trying to establish a healthy, thick lawn, avoid this grass seed!
  • Will die off as the heat comes.
  • Light green and may grow tall, even in cooler weather.

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Creeping Bentgrass

  • Very similar to the grass on putting greens, but not wanted on a residential property.
  • Soft appearance, teal green in color.
  • Can be mowed very low.
  • Very susceptible to disease and heat stress. Not durable, but resilient.  The common eye sores and the shade of green, make it less desirable.
  • Usually creeps from beds, forested areas, and/or golf courses. Bentgrass is invasive and can take over a lawn.
  • Solution: glyphosate

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Nimblewill

  • Just about same characteristics of bentgrass.
  • Distinguishable by the clusters of grass blades near the top (mowing height). These clusters turn brown as winter comes (illustration below).

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Bermuda Grass

  • Warm-season turfgrass.
  • Stays green all year long in the South, goes extra dormant (brown) in the Northeast.
  • Spreads mainly by rhizomes that grows across the ground. Very invasive!
  • Teal green and very stemy.
  • Solution: glyphosate

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St. Augustine

  • Warm-season turfgrass.
  • Stays green all year long in the South, goes extra dormant (brown) in the Northeast.
  • Teal green and big, broad grass blades.
  • Solution: glyphosate

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Dallisgrass (Fringe-Leaf Paspalum)

  • Warm-season turfgrass.
  • Disappears in the fall as it goes dormant, in the Northeast.
  • Army green, grows erect and in clumps, broad grass blades and is very hairy. There are many fine little hairs along the blades of grass.  Fuzzy-like feel to it when touched.
  • Emerges early summer and can resemble nutsedge from a distance. As you get closer, it looks more like a mutant crabgrass.
  • Solution: glyphosate

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Crabgrass

  • Preventable under the correct lawn care program, dirtandturf.com/services/lawn-care-treatment-services/
  • Teal green and grows in clumps.
  • Emerges and begins thriving the end of June to September. Starts dying off as weather cools in the fall.
  • Grows and reproduces very quickly. If not prevented, it will add costs to seeding in the fall.
  • Hearty plant that takes up a lot of space when dead. For this reason, to establish a thick lawn effectively after being a victim of an outbreak, ripping out of crabgrass is required.  To save money, patience is required and seeding can be done without a rip out.  Both procedures could require more seed the following year, but more so the latter.  Whether or not seed was effective, most cases, crabgrass can be prevented in a half decent lawn when a program is implemented in the beginning of the year.  Depending on soil analysis results, you may not want so spend the extra money on a rip out.

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Foxtail

  • Same characteristics as many other summer grassy weeds.
  • Distinguishable by the seed heads, resembles a foxtail.
  • Not preventable, but does not reproduce as fast as crabgrass, making it easier to control.

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Nutsedge

  • One of the most notorious weeds, in recent years, come summer time.
  • Emerges late June, until September.
  • Water causes it (sedge). Usually, the path of water on a property and where the water will settle will bring this weed out.  Over-watering could cause this to appear anywhere.
  • Grows extremely fast! Mow one day, the next day it’s taller than the rest of the lawn.
  • Even scarier, this weed will reproduce just as fast! This plant spreads by rhizomes, across the wet areas.  Starting mid-summer, this plant will go to seed.
  • Looks like grass, but it’s a fluorescent lime color and has a waxy look.
  • DO NOT pull out of the ground! This can be said about all weeds, but with nutsedge in particular, there is a nut at the bottom of the roots, almost like a small onion.  Not only is this weed difficult to pull out 100% of the roots, it’s extremely rare to get the nut.  If the nut is not removed, instead the nut controlling one plant, each rhizome coming from the nut, could send their own shoot, duplicating the amount of nutsedge present in the near future.
  • More than 90% of the herbicides that are labeled for nutsedge, do not get good control of this weed. The pesticide labels for this weed, states suppression or control, which will take a full year to determine.  Control is what is desired, for this weed, killing the plant all the way down to the nut.  Suppression looks like control, the plant will yellow out and wilt, but will come right back the following year.  If no improvement is noticed year to year, most likely, the right herbicide isn’t being used to get control.  Keep in mind, not having the right watering schedule could be a bigger problem than using the correct herbicide.
  • Nutsedge comes up in 3-4 annual waves throughout the summer. After years of observing, nutsedge could emerge in one section of a property early summer, but not in other parts of the property until later in the summer.  The following year, nutsedge will come up in the same spots early on (if not controlled) and the same spots later in the summer, the exact same way as the year before.  If not even suppressed, this weed will at least double in population, in just 1 year!
  • Take advantage of FREE service calls that we offer to help eradicate this weed.

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Kyllinga

  • In the sedge family and many of the same characteristics as nutsedge; color, glossy, attracted by water, fast growth, and rapid reproducing, but much HARDER to control.
  • Far less herbicides are even labeled for it, compared to nutsedge.
  • Instead growing tall like nutsedge, it will stay the same height as the rest of the lawn, making it hard to distinguish between the good grass.
  • Grows in large clumps, can emerge in the thickest lawns, and a bad population of kyllinga could choke out the good grass.
  • Often, homeowners think the control of kyllinga is their grass dying. Suppression/control of kyllinga gets more like a cherry, brown color, instead of a blonde color that grass usually gets.  This darker brown can occur during the transition of summer to fall as it’s going dormant.
  • Some instances, fix the water problem before trying to control kyllinga. Since kyllinga resembles grass so closely, it looks like the lawn is being killed off, each time it’s sprayed.  Kyllinga is so resilient, if wet conditions don’t improve, control is impossible and kyllinga will come back each year just as bad.
  • Late summer, shown in the illustration below, kyllinga becomes a little more obvious producing spike like balls, which is their seed heads.

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