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Serrated tussock (Nassella trichotoma)

Serrated tussock (Nassella trichotoma)

Description: Perennial tussock-forming bunchgrass that can live up to 20 years. Usually grows up to 2' in height with a deep fiberous root system.

Life Cycle: Herbaceous perennial.

Habitat: Pastures, roadsides, grassland, grassy woodland.

Leaves: Long, stiff, narrow leaves. Fine serrations on leaf blade. Small flap or ligule located at the junction of the leaf blade and the leaf sheath.

Flower: When flowering, the plant can appear purple, turning a golden brown colour as the seeds mature.

Fruit: Seeds enclosed in two reddish-brown or purple bracts.

Root: Diffuse, fibrous.

The problem is…serrated tussock is a prolific seeder with 90% of the plant being self-pollinated. Once established the weed will remain for many years.

Serrated tussock plant, USDA APHIS PPQ - Oxford, North Carolina.

Serrated tussock seeds, USDA APHIS PPQ - Oxford, North Carolina.