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Department of Natural Resources

Illinois Exotic Species:
timothy Phleum pratense

Timothy is a perennial plant which has leaves in an alternate arrangement along the stem. Each entire, simple leaf is linear in shape. Three-parted flowers are borne in a spike. The fruit is a grain.

Timothy may be found throughout Illinois. It grows in roadsides, fields and field edges. Flowers are produced from June through August. The pollen from this plant is a prominent cause of hay fever. Timothy is the most important dry grass and hay grass in the United States. This plant is a native of Europe that was brought to the United States with settlers and has spread tremendously.


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