Alliaria petiolata
Garlic Mustard aka Jack by the Hedge, Hedge Mustard
 
Europe

Biennial that has become naturalized as a invasive weed species in woodlots and roadsides of North America
 
Clusters of small white flowers
May followed by a large number of seeds
Rounded basal leaves on the first year plant. Triangular leaves in year two. All parts smell of garlic when crushed.
 
 

 
 
 

 

 
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