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Giant Ragweed

Ambrosia trifida

Photo by BlueAppaloosa
Published on Project Noah
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39.5611, -105.057

Field Notes

Description:

These plants were up to six feet tall, with many branches topped with tiny yellow flowers. Leaves were singular in some places, but three-pointed as they got bigger. The smaller top flowers are the male flowers, and those in the cleft are the female.

Habitat:

open field

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Spotted for Missions

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Flowers of North America
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Flowers in the Rocky Mountains - UT, CO, WY
Photographed
PublishedSeptember 11, 2016

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