On 07/28/2015 10:04 AM, (PeteCresswell) wrote:
It's been about five days since I first sprayed some poison ivy with
Roundup - with a touch up application yesterday.

I'm not seeing any signs of distress in the stuff.
....
Bottom Line: Should Roundup be effective against poison ivy?
....

If you got a 2% solution on the leaves and it was/is actively growing,
glyphosate should work but by itself it isn't as effective as some other
combinatorics...

http://www.clemson.edu/extension/hgic/pests/weeds/hgic2307.html

The guy talking about using concentrate is mostly wrong, btw...the
concentrates are all intended to be diluted before use; the only part he
got right is "read the label".

--