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Invasive Plant Details

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Dame’s Rocket

Latin Name: Hesperis matronalis

Priority Ranking: Low Priority

Identification

Flower: Fragrant, four-petaled flowers in shades of purple, pink, or white, blooming from late spring through summer.

Leaves: Lance-shaped, toothed, dark green leaves arranged alternately along the stem.

Stems: Erect, smooth, and branching, growing up to 1 meter tall.

Growing Environment: Prefers moist, well-drained soils in woodlands, roadsides, and gardens.

Growth Habit: A biennial or short-lived perennial herb that forms a basal rosette of leaves in its first year and a tall, flowering stem in its second year. It spreads by seed and can form dense stands. In situ, Dame’s rocket appears as tall, slender patches of fragrant flowers, often found along woodland edges and roadsides.

Priority Ranking: Low Priority

Impacts on Environment

Impacts: Highly invasive, particularly in woodlands and disturbed areas, where it can form monocultures and crowd out native plants.