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Discussion Starter · #1 ·
Noticed on one field im getting more then a few patches of Canada thistle, got to spray Roundup again soon, was wondering if 1 litre of 540 will kill it or should I add something? Sadly the bastards are two feet tall

thanks
 

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Adding lontrel would be expensive. I would just use a regular rate now and let it regrow until your fall pass, then the 1L rate will toast them when they are storing energy to roots. Now they aren't.
 

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You have to wait till later in season when it is storing up sugars for winter then hit it with a liter of 540. Anytime after mid august is good as long as there is good plant growth
 

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Discussion Starter · #6 ·
kk thanks
 
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