Common Ragweed grows to about one meter (3 feet) in height.

Several herbicides are effective against common ragweed, although resistant populations are known to exist.

These two chemicals had synergistic effect on common ragweed and common lambsquarters.

Two types had large quantities of lead in their upper shoots, hemp dogbane and common ragweed.

Small grains in rotation will also suppress common ragweed if they are overseeded with clover.

Common ragweed is a very competitive weed and can produce yield losses in soybeans as high as 30%.

This species easily hybridizes with the common ragweed species Ambrosia dumosa.

There are some 15 species of common ragweed, whose botanical name is Ambrosia (a misnomer if ever there was one).

But Rock, trying not to smirk, said, "That's common ragweed, Ambrosia artemisiifolia."

The other native plant that has become a weed in this country is the common ragweed, which is found mostly in the Eastern and North Central states.

Ambrosia artemisiifolia, Common Ragweed, is the most widespread plant of the genus Ambrosia in North America.

Under common ragweed, the site has links to several picture displays, notably those from the Weed Science Society of America, showing ragweed as a seedling, a young plant and a mature plant.

In 2001 when carbon dioxide levels were 370 parts per million the pollen output for a common ragweed was twice the level of output that plants used to give out at 270 parts per million, which was the level before the industrial revolution.

E. bella was released in Europe to control ragweed (Ambrosia artemisiifolia), but did not become established there.

Two of the major allergens in the pollen of short ragweed (Ambrosia artemisiifolia) are Amb aI and Amb aII.

It is endemic to North America, but was introduced to Australia from Mexico to control the weeds of the family Asteraceae (Xanthium occidentale, Ambrosia artemisiifolia and Parthenium hysterophorus) in 1982.

Other plants in the habitat may include Andropogon scoparius, Selaginella rupestris, Opuntia compressa, Panicum virgatum, Allium stellatum, Isanthus brachiatus, Hedyotis longifolia, and Ambrosia artemisiifolia.