Most likely, it’s not a grass, but a weed. A common weed in recent years with this characteristic is yellow nutsedge. Nutsedge is a type of sedge, which is caused by an abundance of water. “Nut” refers to the roots. At the bottom of the roots are nuts (bulbs). If the bulbs are not appropriately wiped out, this weed will come back each year. Nutsedge can double in population in one year! Many herbicides are labeled for nutsedge, but very few control it. Every pesticide labeled for this weed will state “suppression or control of nutsedge”, you are left to figure out which one you get. The goal is to get control, killing this weed down to the bulb. Suppression looks like control, the plant dies, but the bulb remains intact. A bulb that was suppressed may not send a new plant until the following year, making results of the herbicide difficult to assess. If you take the time to spray for nutsedge one year and next summer, it is not any better or worse, use a different herbicide! Since this is a very fast growing weed, reproduces rapidly and is only up in the summer months when you are limited at spraying herbicides in the heat, will make this a very difficult weed to control. It may take a couple years to completely eradicate nutsedge, but most of the population shoud be controlled in the first year . Control of this weed is included in our program, no additional charges. If this weed comes up in between visits, that is a good time to take advantage of our free service calls. The more we stay on top of it, the better control we are going to have!
No, not usually. That requires a different pesticide license and we are only associated with turf. Often, other plants, like flowers or shrubs, may be in the vicinity of weeds and the herbicide may damage or kill plants you want to keep. We use a high pressure system to get rid of weeds and the small droplets from our equipment can easily be displaced by a light breeze. As much as we want to help, there isn’t much we can do in that department.
Bad. This is a weed called kyllinga. The spiked balls are actually seed heads of kyllinga, which you do not want to reproduce. Unfortunately, this type of sedge is the most difficult to control and resembles grass very closely. Kyllinga is about the same height of grass, but has a different shade of green and tends to have a glossy appearance. Very few herbicides even have this particular weed on their label and to get control of it, requires a lot of extra care. When this plant is killed, it will get a reddish-brown when most plants would get a yellowish-brown. Many times this weed will look it was killed (controlled), but it was only suppressed and can easily come back! Using the right herbicide and limiting water flow to these areas is the only solution. If negelected, kyllinga coverage could double in just one year.
If your lawn is filled with prickly burrs, you likely have burr weeds. With a little vigilance, however, it is possible to control burr medic and improve the health of your lawn. Read on to learn more.
Burr medic germinates in fall and winter, and flowers in spring.
What is Burr Medic?
Therefore, you may want to use an old woolen blanket to drag over the area first, which should snag most of these burrs. Then the area can be treated with a pre-emergent, such as corn gluten meal, to prevent germination of any seeds left behind. Late summer or early fall is a good time to do this.
Other burr species include:
The use of broadleaf post-emergent weed killer, like Weed-B-Gone, prior to flowering (winter/early spring) can help as well.
Control: Hand-weed seedlings or cut back mature growth, then poison stumps and regrowth. Watch for regrowth and seedlings. When clearing large areas that have become habitat for wildlife, clear gradually, replanting with native or non-invasive plants. Cover disturbed soil with mulch to deter seedlings.
Description: A clumping perennial plant with long, arching, spined stems covered with small, bright green, needle-like leaves giving the plant a fern-like appearance. It produces spires of white, perfumed flowers from spring to autumn followed by berries that ripen to red. Once grown as an ornamental, it is now an invasive weed.
Description: This tiny weed (around 10-15cm high) with a branching flower reproduces itself very quickly, often setting seed and re-growing in a matter of weeks. Often a weed of nurseries and potted plants.
Lantana (Lantana camara)
Life cycle and reproduction strategies: Spreads by seeds blown on the wind.
Here are some of the weeds most commonly encountered in Sydney or other temperate and coastal gardens, with tips on how to recognise and control them using chemicals or physical methods, or both. Remember, when using herbicides, always follow the recommended application rates and times. Repeat applications are normally needed.
Life cycle and reproduction strategies: Often found in disturbed soils. Generally dies down during summer or in dry weather. Seeds prolifically.
Description: A soft, creeping or climbing plant with tiny white flowers and small, bright green, shiny leaves. Once grown as an ornamental, it is now considered an invasive weed. This plant grows from a persistent rhizome.