Should I weed n feed four weeks post application to kill thriving weeds in my yard?
1779737
I have a lawn I am trying to kill. But, weeds have taken over also. I used weed & feed to get rid of the weeds. Now I am going to spray the grass.
347373
2 weeks, give or take, and may require a second application. I just head into the yard every 2 or 3 weeks to re-treat and hit the ones I missed last time. I'm sure by fall it will all be gone.
1830709
As a Master Gardener, I highly recommend Preen Weed Preventer. I have used this product for over 15 years and wouldn't be able to maintain the number of gardens in my yard without it. I apply generously twice a year--before spring /summer annual weeds come up and before fall/winter annual weeds come up. But last year, I didn't read the package label carefully enough and purchased another Preen product: "Preen Lawn Broadleaf Weed Control Granules" and that is a different product altogether. It is formulated to kill weeds that are already growing and will kill your impatiens. It is also harmful to fish, once it gets into the water. So, stick with Preen Weed Preventer and you should be fine. As a Master Gardener, I highly recommend Preen Weed Preventer. I have used this product for over 15 years and wouldn't be able to maintain the number of gardens in my yard without it. I apply generously twice a year--before spring /summer annual weeds come up and before fall/winter annual weeds come up. But last year, I didn't read the package label carefully enough and purchased another Preen product: "Preen Lawn Broadleaf Weed Control Granules" and that is a different product altogether. It is formulated to kill weeds that are already growing and will kill your impatiens. It is... » Read More As a Master Gardener, I highly recommend Preen Weed Preventer. I have used this product for over 15 years and wouldn't be able to maintain the number of gardens in my yard without it. I apply generously twice a year--before spring /summer annual weeds come up and before fall/winter annual weeds come up. But last year, I didn't read the package label carefully enough and purchased another Preen product: "Preen Lawn Broadleaf Weed Control Granules" and that is a different product altogether. It is formulated to kill weeds that are already growing and will kill your impatiens. It is also harmful to fish, once it gets into the water. So, stick with Preen Weed Preventer and you should be fine. « Show Less
815071
Depends on temperature and what your target weeds are. Read the fold out on the container. It's pretty explicit. but, don't expect this stuff to work. It used to be a wonderful product but something, I suspect the EPA, happened to it.
1710494
Depends on the soil that you are using and the type of plant - Anywhere from 4 days to two weeks.
2067392
I would suggest that you read application schedule on the weed and feed you applied ! The Bayer product has application rates and frequency of application suggestions on Label ! No weed killers work immediately, most take several days or more before you start to see results ! Read the instructions before using any Herbicide, Insecticide, or Pesticide and apply as directed !
832448
I would wait at least 2 wks once it yellows and wilts to the ground to allow the herbicide to fully permeate the root system and kill the nutlets. I sprayed it twice one day apart to insure it got a lethal dose. Be sure to apply it when the plants are growing vigorously.................TJ
788994
Yes, it's excellent IF I spray the new growth every week during the budding season. After that I spray every 3 to 4 weeks. Live in woods so have LOTS of deer.
2145344
You should dig up any weeds that grow wide leaves and that a weed-kill spray won't kill. The wide leaf weeds tunnel under the earth down to 8" under and then these roots grow sideways, making a virtual elaborate web type understructure. But, if you don't care if they are there, that is your choice. However, they will certainly kill anything around them as they suck up all the nutrients and moisture from the ground and from the plants/grass around them and the roots can grow at least the size of the width of young carrots and are a beast that will quickly take over your underground (this is very bad for trees and plants and pipes). You certainly can spread them over top your grass, where ever you want them to grow - such as the bald spots. I use a fork shape spade (don't know the term) and scrape the area where I want to put the seeds, so they drop into the indentated soil, then I put a 1/8 - 1/4" soil on top. (If the ground is hard, pre-water it the day before and you will have no problem putting the forked rows into the ground.) Then I just toss the seeds from within my hand, in a 45 degree horizontal waving motion from in between the thumb and closed index finger [to make a small, but wide, opening between the two]. I don't put top soil wherever there is establish grass. You want to MIST water daily until they germinate and start to root into the ground, otherwise you will wash the seeds away into puddles in the yard and they will be left exposed and won't produce well. These directions work very well for me.
2256541
Love my Dragon! This will kill anything. Some weeds, mostly perennials, you may need to flame twice to totally kill an energy left in the roots. What I like about flaming weeds is that the result is immediate. I usually wait until a light rain then go to town around the house with no risk of mulch catching fire. Good luck.
28768
I'd hit you lawn, wait a week and then hit it again. After the second hit, it should be dead in 3-4 days and ready to plant bushes. It's powerful stuff, but it takes time to work.
1244320
I can say best time is after the last snow fall in late February- Mid March. You could still apply it now and see the difference in your lawn in 6 weeks (greener). Hopefully you will have some precipitation for a few days after you apply it. It will still work, but mostly everyone is preparing for Phase 2 a Turf Builder with a weed halter.
919529
While lawn fertilizers and plant foods have an indefinite shelf life if they are stored correctly, products that have a control in them, such as weed or insect control, should be used within 3 to 5 years, as the control may lose its effectiveness.
1477029
I started off with 1 to 5 in the strong sun, and had mixed results. My stronger, deeper rooted weeds ended up needing needing 1 to 3. They do begin to wilt before your eyes, but you need a couple of days to see if it has gotten the entire weed or just the surface parts. Deep roots = stronger ratio.
1671260
Thanks for writing Amazon and Preen about Preen Garden Weed Preventer. Preen Garden Weed Preventer is effective in Texas and other southern states. It has been on the market for a long time, helping people to control their garden weeds. A few years ago, Preen Southern Weed Preventer was introduced with a slightly different formulation, which extends its effectiveness for up to four months. Preen Garden Weed Preventer is considered effective for three months. The extended effectiveness of Preen Southern Weed Preventer works better in the south because of its long growing season. Preen Southern Weed Preventer is available from Amazon, so it looks like you have a choice to keep weeds under control in your garden. You also may be able to find it at your local garden center. For more information about Preen products, weed identification and other tips, please visit preen.com.
1027408
I don't think it would work very well. If you are not opposed to chemicals search on Amazon for "12 Month Weed Killer." I used it and it worked really well. Lawrence's idea of the propane torch is a really good idea, too.
2067393
You can use it up to twice per year. IMO if the weed and feed didn't work I wouldn't worry that it counts as an application. I have used this stuff for a few years now and it isn't real aggressive toward killing lawn grasses. I have cheated and used it up to 3 times in a year with no bad effects.