LA’s weather is great for being outdoors, regardless of the season. The warm weather, sunshine, and plants bloom make for a great atmosphere. But what if your lawn is crawling with weeds that won’t go away? We’ll take a look at some of the top weeds disrupting your lawns and the best methods to control them.
Bermuda: Tough as Nails
Considered one of the toughest weeds to kill, Bermuda is as stubborn as they come. It is proven to be widely resistant against most methods of management and comes back year after year. The traditional method of digging by hand isn’t effective on its own, nor are most of the herbicides on the market. Due to the complex root structure and resilience of the weed, it takes a combination of both.
Bermuda, with long stalks and blades coming off the sides, has roots that are able to grow back even if most of it has been removed. The best method of managing the weed is to use a blanket herbicide. This herbicide kills everything in the area, with the most effective ones using glyphosate as the active ingredient. Using this chemical has proven to be the most effective method of killing the weed. After spraying the weed, it still has to be removed by hand, as the roots can regrow in the future.
The process may need to be repeated multiple times to achieve the desired results.
Kikuya: A Year-Long Problem
Similar to the Bermuda weeds, this invasive nuisance has a similar appearance and root structure. As a result, the same method of management has proven to be effective against the weed. It has also been managed through weed specific treatments, which will help to maintain the rest of the lawn while attacking the weed.
The difference between Kikuya and Bermuda is the fact that Bermuda is a warm weather weed that sprouts during the warm months, whereas Kikuya can thrive in both warm and cool weather. It is more adaptive to the temperature, but it is less aggressive in lawns than it is in nature.
Since it is not as aggressive in lawns, it can be controlled by having a healthy lawn that can suffocate the weed. It is also vital to ensure that it does not spread throughout the lawn. So when using lawn equipment, ensure that it is clear of seeds to stop the spread of the weed throughout the lawn.
Nutgrass: Aw Nuts
Nutgrass, or nutsedge as it is otherwise known, is another invasive weed that is very tough to remove. This weed can be just as difficult to remove as the others on this list due to the structure of the weed, which has nuts hidden within the root system, which can be very hard to detect and can spread very easily. Nutgrass is a weed with a solid triangular stem, with three blades that branch off from the stem.
Some of the traditional herbicides and systematic treatments have not been effective in dealing with nutgrass due to the deep roots and nuts. The top layer of the weed may die, but it will sprout again because the roots are still alive.
It is possible to manage the weed without removal, if the lawn is at a height to shade the weed, as it does not grow well in shade. This allows for it to be controlled. The best method for properly dealing with the stubborn weed, however, is to remove it by hand. Because of its roots, it has to be dug out deeply and wide, ensuring that all possible nuts are removed along with the weed.
Poa Annua: A Long Battle Ahead
Poa Annua, or Annual Bluegrass, is a very common weed in lawns across the country. It has long blades with flowery tips filled with seeds. Bluegrass is so prominent because the weed can seed hundreds of times throughout a season. The constant germination of the weed allows it to spread very easily.
The seeds themselves are resilient as well. They can lay dormant for years before sprouting up, making the battle to control them last over many seasons. Bluegrass seeds in the cooler months, which typically happens early spring or early fall, so the best way to combat this is to spray the weed with a pre-emergent herbicide, which will prevent it from seeding. Due to the fact that the seeds can lay dormant for seasons, it is a process that will have to be repeated to effectively manage.
What to Do Now
Now that you have the knowledge to manage weeds, do you have the time? If not, don’t worry. The experts at Lawnscape have all the knowledge and tools to combat these resilient weeds for you. These weed specific treatments are included in our lawn care program, along with a long list of other key services.