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I purchase full strength roundup from places that sell fertilizers etc to farmers. I mix my own roundup per their recommendations plus a little. I fill a small eye drops bottle with my mixed roundup. I like this bottle because it has a small opening so I can squeeze out a drop at a time.. I carry the bottle of mixed roundup in my pocket, with the lid shut tight of course, and as I mow and I spot a weed I take out the bottle and place on or two drops on that weed. One drop of roundup on a leaf of a plant will kill it but I try to place one or two drops right in the middle of the plant. Roundup is fed to the root of the plant from the leaf kills the weed from the roots up. This works well because I can kill the weed without killing grass or other plants around it. Wind will not effect it because the roundup is place on the plant not sprayed on it. Roundup needs about 12 hours to work so do not water right away. Ready mixed roundup from a store may work, I have not tried it because I want to be sure the mixture is strong enough to do the job. About 4 ounces per gallon of water is recommended, I increase that to about 6 ounces. Works great.
Hello, I am a grower and licensed pesticides applicator (40 yrs exp).
Roundup lost the trade mark years ago,"glyphosphate" which is now marketed (cheaper) under many other names,
Will kill a live tree if sprayed on the leaves! Also will damage young trees if you just get over spray on the trunk while spraying weeds.
Also, kills grass as well as broadleaved plants.
To kill a tree you would need to spray the leaves, then wait at least a month before cutting the tree down. I have successfully killed a few stumps by spraying the live suckers.
Be especially careful of spray drift as the finer the droplets are the more effective the chemical is. Read the label!
Hi,
Round up will work on any grass...I prefer to mix it a bit stronger when I know I am trying to kill grass... but yes it works... ask my daughter who wanted to help and spray the weeds for me and then decides to play around in the yard writing her name....:-)
It can take a week for a full killl though...
If you have the concentrate (label reads Concentrate Plus), the amount of Roundup will depend on the plants you want to kill. Use 6 fl oz (12 tablespoons) for 1 gallon for most plants. If you have seedlings or easy to kill weeds, use 3 fl oz (6 tablespoons) per gallon.
The Super Concentrate may have a different rate. The labels are usually on the manufacturer's web site as PDFs.
6 fluid ounces of Roundup (12 tablespoons) per gallon of water. Small weed seedlings can be killed with half this strength: 3 ounces per gallon. When using Roundup Super Concentrate, mix 2.5 ounces (5 tbsp.) with a gallon of water to control most weeds and a half-strength solution for small weeds. Roundup Pro Concentrate is the strongest solution available. Spray a mixture of 2 ounces (4 tbsp.) on weeds and half that amount of concentrate on emerging plants. Since Roundup doesn't discriminate between weeds and other plants, use the least amount of herbicide possible to protect desirable vegetation.
Annual and perennial weeds can be controlled with a mixture of 6 fluid ounces of Roundup (12 tablespoons) per gallon of water. Small weed seedlings can be killed with half this strength: 3 ounces per gallon. When using Roundup Super Concentrate, mix 2.5 ounces (5 tbsp.) with a gallon of water to control most weeds and a half-strength solution for small weeds. Roundup Pro Concentrate is the strongest solution available. Spray a mixture of 2 ounces (4 tbsp.) on weeds and half that amount of concentrate on emerging plants. Since Roundup doesn't discriminate between weeds and other plants, use the least amount of herbicide possible to protect desirable vegetation.
Roundup Concentrate Plus is the least concentrated mixable product Monsanto offers. Annual and perennial weeds can be controlled with a mixture of 6 fluid ounces of Roundup (12 tablespoons) per gallon of water. Small weed seedlings can be killed with half this strength: 3 ounces per gallon. When using Roundup Super Concentrate, mix 2.5 ounces (5 tbsp.) with a gallon of water to control most weeds and a half-strength solution for small weeds. Roundup Pro Concentrate is the strongest solution available. Spray a mixture of 2 ounces (4 tbsp.) on weeds and half that amount of concentrate on emerging plants. Since Roundup doesn't discriminate between weeds and other plants, use the least amount of herbicide possible to protect desirable vegetation.
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