Wildflowers Identified: Common Ragweed
You can search Google Images for images of this wildflower.
Common Ragweed has these characteristics:
- in a head (7 or more petals): cluster of stalkless (or nearly stalkless) flowers
- cluster or spike of flowers (a spike is a long cluster, with the flowers along the stem)
- 1/8 of an inch or less flower width
- brownish or greenish flower color
- blooms in July
- blooms in August
- blooms in September or later
- plant height one foot to two feet
- plant height two feet or more
- leaf petiole present (has a leafstalk)
- alternate leaf arrangement on the stem
- opposite one another leaf arrangement on the stem
- irregular leaf edge
- deeply cut leaf edge
- branched leaf veins
- simple leaves about as long as wide
- simple leaves about 1 1/2 to 5 times as long as wide
- stem is hairy or spiny
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Eric Haines,
erich@acm.org