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  #1  
Old 01-18-2005, 09:12 AM
Cutworm Cutworm is offline
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Location: Pelzer, South Carolina
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How warm does it have to be for roundup to be effective?

Just wondering at what temp you guys stop spraying.
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  #2  
Old 01-18-2005, 09:54 AM
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westwind westwind is offline
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anything below 40 degrees F, but up here have never sprayed later than Sept. 1
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  #3  
Old 01-18-2005, 09:58 AM
PTP PTP is offline
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Whatever you are spraying it on has to be growing and not dormant.
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Old 01-18-2005, 01:17 PM
GroundKprs GroundKprs is offline
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There is no real temperature limit for Roundup application. The only qualification is that a plant be actively growing if you want to control it with Roundup. You can actually use Roundup as a selective over the top control at lower temps - i.e., desireable plants are dormant, but weed plants are still growing.
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Old 01-21-2005, 04:45 AM
Cutworm Cutworm is offline
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Thanks All!
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