Scientific name: Cynodon dactylon
Description: Bermuda grass is a creeping, perennial grass (lives more than two seasons) that grows from seed but spreads by means of runners. It grows 4-16 inches high. The leaves are short and flat. The head has 4-5 spikes that are 1-2 inches long at the summit of a slender, flowering stem. The grass thrives throughout the hot weather but cannot survive hard freezing. Bermuda grass is found from Maryland and Virginia southward and westward to Arizona and California.
Other: Bermuda grass is an important pasture grass in the southern states and is used extensively for athletic fields, golf courses and lawns. Because it spreads readily, it may become a troublesome weed in cultivated fields. It can be killed if shaded or crowded by other crops.
Description: Johnson, Sudan, and grama grasses are also a distinctive group. Sudan and Johnson grass are very closely related and yet have slight differences in their allergenic components. Red Top grass pollinates abundantly from June - July.
Scientific name: Phleum pratense
Description: Timothy grass is short-lived, perennial grass (lives more than two seasons) that grows 1.5 - 4 feet tall. The grass blades are elongated and mostly flat. The stems arise from a bulb-like base forming large clumps. The flowers are in elongated grouped clusters, 1.5 - 5 inches long. It is cultivated in humid regions of the United States. It is sometimes called herds grass.
Other: The common species, Phleum pratense, is the United States' most important hay grass. Although not recommended for lawn grass, the seed is sometimes included in low-priced lawn grass mixtures as it is inexpensive, starts quickly and provides good green growth. The native species, alpine timothy, provides forage in mountain meadows of the Western states.