Solidago altissima, commonly known as tall goldenrod, is a perennial wildflower native to North America. It is distinguished by its towering stems, lance-shaped leaves, and dense clusters of small, bright yellow flowers that bloom from late summer to autumn. Unlike many wildflowers, it provides a critical late-season nectar source for bees, butterflies, and other pollinators when few other plants are in bloom. Its ability to form large, spreading colonies helps stabilize soil and create habitat for insects and small wildlife, making Solidago altissima an important species in prairies, meadows, and open woodland ecosystems.