BCP/Ambrosia trifida

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Ambrosia trifida

Botanical drawing

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Profile for Ambrosia trifida (Giant Ragweed)
Identifying Characteristics
Flowers:Minute heads on dense spikes. Yellow, but appear green from a distance.
Life Cycle: Perennial
Recent Logs[edit]

Global data:

Regional data and additional images for Ambrosia trifida

Regional data:
Southeastern Pennsylvania: (native) August, September

Additional images:

Please contribute!
This page is a profile for the plant species Ambrosia trifida, used to collect records of where and when this plant was observed blooming, and for providing identification information for use in dichotomous keys. If you would like to help collect data for this or other plants, see Bloom clock project/How to Contribute for orientation.