group of ragweed plants
closeup of the stem and leaves
Bloom stalks of the Common Ragweed plant
A source of shelter for insects, Ragweed harbors many species.
Common Ragweed seedling, early April, West KY
Ragweed (Ambrosia artemisiifolia)
Common Ragweed, Annual Ragweed (Ambrosia artemisiifolia) - male flowerheads at top (pendulous with anthers exserted); female heads (underneath male heads, above the highest leaves)
Common Ragweed, Annual Ragweed, Annual Bur-Sage (Ambrosia artemisiifolia) foliage
A very close view of the Common Ragweed, Annual Ragweed, Annual Bur-Sage (Ambrosia artemisiifolia) male flowerheads showing the fine hairs and some of that infamous pollen falling from the top right flower
A very vigorous ragweed.
A ragweed that's about two days away from flowering.
Ambrosia artemisiifolia in High Park, Toronto, August 16, 2009.
A specimen at a house foundation