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Transcript 
BIOLOGICAL CONTROL
INVASIVE WEEDS
• THERE ARE NUMEROUS SPECIES OF
ALIEN PLANTS THAT HAVE INVADED
NORTH AMERICA AND ARE NOW
IMPORTANT WEEDS IN AGRICULTURE
AND ELSEWHERE.
• THEY HAVE ESCAPED THEIR ENEMIES
AND HAVE EXPLODED IN NUMBERS IN
THEIR NEW HOMES
IMPORTANT INVASIVE WEEDS IN
THE UPPER MIDWEST
•
•
•
•
•
GARLIC MUSTARD
CANADIAN THISTLE
SPOTTED KNAPWEED
JAPANESE HONEYSUCKLE
EUROPEAN MILFOIL
GARLIC-MUSTARD
(ALLIARIA PETIOLATA)
SPOTTED KNAPWEED
(CENTAUREA MACULOSA)
EFFORTS IN
BIOLOGICAL CONTROL
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