Roundup life

   / Roundup life #1  

Haneyman

Member
Joined
Jul 6, 2018
Messages
37
Tractor
John Deere 3038e
How long does Roundup stay good if mixed in a tank?
Would like to mix 20 gallons and use little at a time over 2-3 months
Thanks,Mike
 
   / Roundup life #2  
I had some of the little gallon (I think) jugs with the sprayer on it for homeowner usage in my shed for two years. Eventually used it to kill the grass around my pool and it still worked fine.
 
   / Roundup life #4  
It may be less effective than when fresh, but I've used your old Roundup and even to 2 year old Roundup, it worked.
 
   / Roundup life #6  
I got a 2.5 gallon jug of knock-off Roundup from Home Depot when it was $40, so several years ago. I mixed a batch this spring and it did fine; it's kept in the shop, dark and above freezing.
No idea on mixed longevity, I have a 3 gallon sprayer and two batches will barely do what I need done.
 
   / Roundup life #7  
How long does Roundup stay good if mixed in a tank?
Would like to mix 20 gallons and use little at a time over 2-3 months
Thanks,Mike
I always mix some early in the summer and use it all season. Seems to work fine.
 
   / Roundup life #8  
What are you mixing it in? If you are doing this in a sprayer with a PTO pump, the RoundUp mix is fine but it will corrode the pump (depending on the quality of the pump). I make sure to wash and clean and oil the pump after use.
 
   / Roundup life
  • Thread Starter
#9  
We’re mixing in a plastic spot sprayer tank with a rural king diaphragm 12 volt pump
 

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