Helianthus (/ ˌhiːliˈænθəs /) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [4][5] Except …

The genus name, Helianthus, is derived from the two Greek words, helios, meaning sun, and anthos, meaning flower. Although generally preferring moist soil, some species will tolerate …

Common sunflower spreads rapidly by seed, especially in disturbed sites. It has been shown to have an allelopathic effect: it releases chemicals that stunt the growth of other plants. …

Cherished for their beauty, Sunflowers (Helianthus) are striking ornamental annuals or perennial plants grown for their colorful summer and fall blooms. Fast-growing, they can reward you with …

Oct 2, 2025 · Sunflowers, including the popular annual (Helianthus annuus) are beloved for their bright summer blooms. While annuals need replanting each year perennial sunflowers offer an …

There are more than 70 species and varieties of sunflowers with surprising shapes, sizes and colors. The genus Helianthus is valued for its adaptability, beauty, and usefulness in food and …

Common sunflower is a widely branching, stout annual, 1-1/2 to 10 ft. tall, with coarsely hairy leaves and stems. The terminal flowers heads are large and showy, up to 5 inches across.

Mar 4, 2025 · Learn how to grow and care for Helianthus, with tips on optimal growing conditions, seasonal care, propagation, and creative uses.

Oct 19, 2023 · The Helianthus genus is a member of the Asteraceae family, and is best known for containing the Sunflower. Native to North America, these plants are celebrated for their large, …

Oct 14, 2024 · Helianthus annuus: This is the classic annual sunflower that most people are familiar with. It can grow from 3 to 12 feet tall, depending on the variety, and produces large, …