How tall can Purple Loosestrife grow?

Purple loosestrife (Lythrum salicaria) is known for its notable height, often reaching significant lengths that can surprise many who encounter this invasive plant in wetland areas. While the typical growth range of purple loosestrife is between 3 to 7 feet, under optimal conditions it has the potential to grow even taller, up to 10 feet. This extensive growth can contribute to its invasiveness, as it can quickly dominate the landscape, crowding out native plant species and disrupting aquatic ecosystems. Understanding its height is crucial for management practices aimed at controlling its spread and minimizing its ecological impact in habitats where it is not native.