Fertilizer with pre-emergent

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python01

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I am in Southern Ontario, Hamilton area.
Is it about right time now to put down fertilizer with pre-emergent weed control now?
I want to make sure I got the timing right.

Thank you.
 

Steve123

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Suppose it depends on the weed. The only thing I use pre emergent is for crab grass. And its WAY too early to put down pre-emergent for crab grass. I find it does not start coming up until June. If that is corn glutten you are putting down (orange), I have read its effective for about 5 weeks.
 

python01

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I do have some clover and dandelions in addition to the crab grass.
So maybe I should put it down twice?
Once now and once in June?
Also which product do you guys find works best for this?
 

Steve123

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Scotts Ecosence Weed-B-Gone does a very good job on dandelions. Be generous with it. Its a lot cheaper if you have a pump sprayer and buy the concentrated WBG.
I find Clover very difficult to control. WBG hurts it but has a hard time getting rid of it.
 

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