Yellow loosestrife is a perennial herbaceous plant with bright yellow flowers that bloom in the summer. It is also known by several other names, including yellow willowherb, blooming Sally, and swamp willowherb. The plant is characterized by its tall, slender stems and lance-shaped leaves that are arranged in pairs along the stem. Yellow loosestrife prefers moist habitats like swamps, wet meadows, and roadside ditches. The plant is often used in landscaping because of its beauty and ability to attract pollinators like bees and butterflies. Other synonyms for yellow loosestrife include broad-leaved willowherb, purple willowherb, and lance-leaved willowherb.