Ask a Question
Notify Me On Question Update
Email this Question
I think I have Johnsongrass invading my back lawn. I has sprayed the usual Crabgrass/lawn grassy weed killer on it and it is still taking over my entire lawn. What can I do?
Rate This FAQ
Here is a link to Johnson grass control from University of Missouri Extension. The excerpt below on control emphasizes an integrated approach, that is using many different methods to manage the Johnson grass, there is not a silver bullet but an integrated pest management approach to deal with this weed.
link to the article is http://extension.missouri.edu/publications/DisplayPub.aspx?P=g4872
Preventing johnsongrass from becoming established in new areas is the best available control method, because the weed spreads in so many ways. Because johnsongrass is a perennial weed, single cultural control measures or herbicide applications rarely provide adequate control.
Johnsongrass control programs should
* Prevent spread of rhizomes from infested to uninfested areas.
* Kill or weaken established plants and their underground rhizome system.
* Control seedlings originating from shattered seed.
* Prevent production of seed and its spread to new areas.
* Use fall tillage to bring rhizomes to soil surface, where they may be killed by winter conditions.
These objectives are closely related and are equally important to the success or failure of a control program. In limited infestations, it is possible and desirable to use herbicides to kill the weed and prevent seed production. The critical time to kill johnsongrass is while the weed is becoming established and before it has spread over the entire field. For sites with established infestations, a fall application of Roundup or Touchdown will kill emerged tissue and often developing rhizomes.
Submit Your Suggestion
Other Questions In This Topic
- We have about 6 pine trees (blue spruce) in our yard and we have noticed that this year they are loaded with pine cones. Does this mean anything? We have looked on the farmers almanac thinking that it must mean we are in for a hard winter, or something in that nature, but have been unsuccessful in finding the answer. Do you have any information why the trees are loaded with pine cones?
- My neighbors Aspen trees are sending roots into my yard. Is there anyway besides a barrier to discourage this growth?
- We have a weed in our hay field that is choking out the field in quite a large area. The weed has a hard stem with heart shaped leaves about 1/4 to 1/2 inch in size around the stem leading to seed pods that look like flowers that are hard and have a seed in them. The seed is red and the husk around them is green when the seed leaves the husk is white, stem is hard green and stick like.
- Our blue spruce has been around for 30 years. but the new buds have no needles and they are brown. Even up the center of the tree is brown with no needles. My father has put a bed of rocks around it and I am not sure if it is affecting it. We also had two crimson maples and they lost all of their leaves half way through summer. This year there are no leaves at all. Do the trees have disease?
- I have a healthy looking aspen tree whose leaves turn brown and fall off in early September without ever turning colors. I live in Midway and Aspens do well here. Do you know the cause and can it be corrected?
- We moved into our 2-story home in Lehi 1 year ago. The tree out front (which I planned to have my husband cut donw) has doubled in height since then. I don't know what kind of tree it is...medium size, darkish leaves. How do we (and when should we) cut it down to prevent it from sending up suckers?
- i was baking a chicken casserole last night. the power went out after about 30 minutes of baking. i put it in the fridge. then, i cooked it for 1 and 1/2 hours more when the power came back on 3 hours later. i put it back in the frige. is it safe to eat tonight?
- What pesticides can I use for alfalfa weevil, and what are the best? Have Furadan and Lorsban been removed for this application