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Asteraceae (Aster Family)

Ambrosia trifida

Ragweed, Great (Giant Ragweed)










Plant TypeForb
Life CycleAnnual
Leaf PatternOpposite
HabitatMoist sunny areas.
DescriptionA course, rough feeling annual plant with stiff hairs. It is much larger than its brother, the Common Ragweed. The leaves have 3 to 5 pointed large lobes. The flowers are small, green and inconspicuous and hang upside down on upright spikes. In the summer they produce very obvious bright yellow pollen.