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  #1  
Old 05-21-2013, 04:02 PM
CK82 CK82 is offline
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Perennials growing in new lawn, will lawn herbicides kill them off?!

Hello,

Last fall we removed some flower beds for a customer and planted new lawn. At the time it was hard to tell what was there since it was near dormancy. This spring the perennials (tulips, hostas, etc.) have popped up in various areas. Can I treat the lawn as I would for weeds and eventually kill them off? Or are perennials too hardy to die off with any herbicide that is selective?

Should I just treat them with Gly (Roundup), wait, then re-seed?

Please help with suggestions and expertise.

Thanks, Chris
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Old 05-21-2013, 06:05 PM
buddee buddee is offline
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With what you are naming in particular is pretty hard to get rid of because they are bulbs (daffodil, tulips? - really aren't perennial, hostas) and roundup really won't get in the bulb enough to kill it off, you could try using a 2-4D based product such as trimec, but mainly herbicides are just going to burn off the leaves for a time only for you to return and see them there again - and though you can shrink and shrink them down with herbicide use - they will still popup and this can go on for years. What i would recommend for safest and fastest removal is simply dig up the bulbs, and though this may not be the best suggestion as far as ease is concerned, it'll definitely work.
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  #3  
Old 05-22-2013, 02:37 AM
greendoctor greendoctor is online now
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T Zone contains two herbicides known to be hard on bulbing weeds. Sulfentrazone and Triclopyr. Since you are in a cool season area, those would be the best fit. In warm season grasses, a different mix is suggested.
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Old 05-22-2013, 07:11 PM
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CHARLES CUE CHARLES CUE is offline
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I only spray 3 way for the most part and tulips and daffodils don't come back the next year. But you do need a surfactant to get threw the waxy layer I have never sprayed hostas but I cant think they would be hard to kill.

Charles Cue
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Old 05-22-2013, 07:37 PM
Mark Oomkes Mark Oomkes is online now
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I'm thinking plain ole 3 way or pretty much any herbicide will take care of them.

Not only that, but the hostas aren't going to survive long with regular mowing.
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Old 05-23-2013, 02:37 PM
CK82 CK82 is offline
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Great feedback guys! Thank you. I have some potion that will work good, along with the surfactant.

-Chris
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Old 05-23-2013, 03:40 PM
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phasthound phasthound is offline
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Why not just dig them out and replant them elsewhere?
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Old 05-25-2013, 06:19 PM
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DA Quality Lawn & YS DA Quality Lawn & YS is online now
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Quote:
Originally Posted by CHARLES CUE View Post
I only spray 3 way for the most part and tulips and daffodils don't come back the next year. But you do need a surfactant to get threw the waxy layer I have never sprayed hostas but I cant think they would be hard to kill.

Charles Cue
I laughed at this 'never sprayed hostas'
Most guys would get a tongue lashing from old ladies if they did spray hostas.
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Old 05-26-2013, 08:16 AM
Smallaxe Smallaxe is offline
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I agree,,, that the quickest and simplest way would be to just dig them out and be done with it...
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Old 05-26-2013, 11:24 AM
pieperlc pieperlc is online now
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Just mow them off. They will quickly run out of energy reserves and quit coming back.
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