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 for three South American species, the species of Helianthus are native to …

2024年8月2日 · The annual sunflower (Helianthus annuus) is a classic summer favorite. While easy to grow from seed, they must be replanted each year. The genus Helianthus also includes several perennial species. These are fairly long-blooming, late-season flowers, blooming in late summer through mid-autumn.

Plant in the full sun for the most blooms and enjoy the flowers from late summer until the first frost. Leave the seed heads standing to provide a late fall and winter food source for birds. The giant sunflower H. annuus is the plant that provides the seed we snack on and sunflower oil.

2022年10月6日 · Flowers in the Helianthus genus number about 50 and include annuals, those large, sunny yellow blooms you mostly see in gardens. They also include Helianthus perennial sunflower varieties.

The common sunflower (Helianthus annuus) is a species of large annual forb of the daisy family Asteraceae. The common sunflower is harvested for its edible oily seeds, which are often eaten as a snack food.

Helianthus annuus (Common Sunflower) is a tall, fast-growing annual with broad, oval to heart-shaped, roughly hairy leaves. It produces huge, brilliant flowers in summer, up to 12 in. across (30 cm), with yellow petals surrounding a dark chocolate central disk.

2024年8月26日 · Sunflowers (Helianthus annuus) are treasures of summertime. These low-maintenance plants typically begin blooming in the midsummer and can persist into early fall. The flowers, which stretch around three to six inches across on average, have a broad central disk surrounded by short, yellow petals.

2023年10月19日 · Plant Characteristics: Helianthus boast large, radiant blooms that turn towards the sun. They add a dramatic and joyful touch to gardens, and are also great for attracting birds and pollinators. Ideal Growing Conditions: Sunflowers love full sun and a well-draining soil.

Sunflowers–botanical name Helianthus–are grown for their bright yellow ray florets and edible seeds. There are both annual and perennial sunflowers available in a wide color range. Some have smaller flowers; others have very large flower …

2024年4月6日 · The sunflower, also known by its scientific name Helianthus, is a member of the Asteraceae family that encompasses almost seventy different species that include many beautiful varieties in various colors, shapes, and sizes. The name comes from its tendency to reposition itself to face the sun.