Giant Ragweed

Common Name: Giant Ragweed

Botanical Name: Ambrosia trifida L.

Family: Asteraceae

Life Cycle: Annual (spreads by seeds)

Defining Identification Characteristics:

• Lower leaves have three large lobes

• Upper leaves often unlobed

• Hairy stems and leaves

• Small green flowers in terminal clusters

Common habitat:

• Landscape gardens

• Farm fields

Noxious Weed List/Legal Status:

Eradicate Control Restricted Specially Regulated Not Listed

Additional Information:

• Giant ragweed : Ambrosia trifida - Asteraceae (Aster)

• Ambrosia trifida