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Old 26-07-2008, 09:49 PM posted to
ecarecar ecarecar is offline
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First recorded activity by GardenBanter: Sep 2006
Posts: 21
Default How Long Till Roundup Works?


On Jul 25, 6:10 pm, Oren wrote:

On Fri, 25 Jul 2008 15:41:12 -0400, "Von Fourche"


I bought some Roundup weed killer yesterday. I sprayed a part of the
fence line. How many days does it take for it to kill the weeds? I am
hoping Roundup would first kill the weeds, then I would take a weed-eater to
them in a week or two after Roundup does its job.

You should see signs of wilting in 24 to 48 hours, then they should be
dead in about a week. It's highly dependent on temps. Those times
are for70 to 80. If it's 45 deg, it can take much longer and isn't as

What about generic Roundup?

Follow the directions.

Also, I bought some Roundup Poison Ivy killer and sprayed some Ivy that is
growing on a tree. Will that stuff actually kill the Poison Ivy for the

It depends on how large the plant is. For larger vines, it's most
effective to cut the vine, then treat the leaves on the lower part.
It may require a couple applications.

No! It might require other measures for eradication.