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Pest Information

Pampas Grass

Pampas Grass

  • Latin Name: Cortaderia Selloana
  • Common Name: Pampas Grass
  • Other Names: Uruguayan pampas grass

Pest Details

Pampas Grass

Origin:

Native to Argentina, but introduced as a landscape plant, and now found in a number of states from Oregon and California east to Florida and north to New Jersey. It does best in warmer climates.

Biology:

This perennial reproduces from seeds, but spreads by its rapid growth to become very large, invasive tufts that crowd out other vegetation. A tough, fibrous root system makes its removal difficult. The huge flower heads are very attractive for landscape or property borders, and it is used on slopes for soil retention.

Identification:

One of the largest grasses, mature plants can be almost 20 tall to the ends of the flower heads. Leaves arise from the base of the plant as long, narrow, rough-edged leaves over 3 feet in length. These are drooping, giving the overall plant a sprawling appearance. Flower heads are at the ends of the long, thick stalks, and each cluster can be up to 3 feet in length as a large, white, silky looking inflorescence.

Characteristicts Important to Control:

Physical removal is possible but difficult due to the tough root system. Plants may be killed with a contact or systemic herbicide, but the large size of the plant makes removal desirable where renovation of the ground is needed.

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