Garlic mustard  invades forests and actually poisons the fungi that keep
forest trees healthy.  It has white flowers, not yellow.  It is a biennial
and can be removed, but requires persistence. Offhand, I can't remember the
scientific name.  I know the yellow mustard you're thinking of and it is an
entirely different plant.
--  
    Carolyn Summers
    63 Ferndale Drive
    Hastings-on-Hudson, NY 10706
    914-478-5712



> From: Will Fell <[email protected]>
> Reply-To: <[email protected]>
> Date: Tue, 11 Aug 2009 05:40:45 -0700 (PDT)
> To: ENTSTrees <[email protected]>
> Subject: [ENTS] Re: Invasive plants and trees
> 
> 
> Wild Mustard (genus Brassica) is a major agricultural weed/pest down
> here. I would assume that is the same as garlic mustard. It is full of
> yellow flowers in the early spring. It is primarily a winter weed and
> dies back in the summer. So far it doesn't stray off of disturbed
> land.
> 
> On Aug 11, 1:23 am, Beth Koebel <[email protected]> wrote:
>> Barry,
>>  
>> May you never hear of it.  Our two biggest (by that I mean most
>> numberous) invasive plants are bush honeysuckle and garlic mustard.  Both are
>> a pain to remove on a perment basis.
>>  
>> Beth
>> 
>> Trees are the answer.--bumper sticker from Illinois Forest Association
> > 



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