The most obvious example of grasslands in North America are the prairies of the Great Plains region of the continent. The North American Great Plains have largely disappeared because of agriculture, particularly in the east. On the eastern edge of the Great Plains, prairie consists of tall grasses and a tremendous diversity of other herbaceous plants. In a savanna the tallgrass prairie is either inter-digitated with patches of woods, or trees may occur as scattered individuals in the grassland. Fire is a natural part of their environment and controlled burning can be an important conservation measure.
Annual rainfall declines as one goes westward in the Great Plains.
Grasses decrease in size and the number of herbaceous plants declines in numbers and diversity. This page has been divided into a number of categories. You might also want to visit a list of organizations involved in grassland conservation and research . There is also a page on suppliers of native plants and seeds , some of them dealing in prairie plants. The Tallgrass Prairie of Illinois .