Helianthus annuus (Common Sunflower)

Helianthus annuus, commonly known as the common sunflower, is a species of flowering plant in the Asteraceae family. Its native range spans 48 continental states within the U.S., in addition to the District of Columbia and Puerto Rico. It has also been introduced to Alaska and Hawaii as well as Canada’s provinces Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, and Saskatchewan. It is also found in France’s Saint Pierre et Miquelon archipelago. Common sunflower grows best in a sunny location with well-drained soil and can reach heights of up to 8 feet. The large yellow flowers, which often face toward the sun and can be up to 12 inches in diameter, bloom in late summer or early fall and are attractive to bees and other pollinators. Its edible seeds contain a nutrient-rich oil that has been used for centuries in cooking and skincare. It is also an excellent source of cut flowers for floral arrangements and adds beautiful color to any garden. Common sunflower is an easy-to-grow plant that can add beauty and interest to any outdoor or indoor space.

It can be grown from seed or sown directly in the garden. Once established, it is a hardy and drought-tolerant plant that requires minimal care and maintenance. It does best when planted in an area with full sun exposure, but will tolerate some light shade. If desired, staking can help support taller plants and prevent them from flopping over. Deadheading spent flowers will help promote additional blooms and keep the plant looking tidy. Common sunflower is a beautiful addition to any landscape or garden, bringing color and interest as well as providing sustenance in the form of its delicious seeds.

Common sunflowers are also beneficial to other plants in the garden by providing habitat and protection for beneficial insects such as bees, butterflies, and other pollinators. The large flower heads also provide food for birds in the form of their seeds and by providing a sheltered spot to hide from predators. In short, the common sunflower is a beautiful plant that is both attractive and practical. Whether you’re looking for an easy-to-grow plant for the garden or a source of cut flowers for floral arrangements, the common sunflower is an excellent choice.

With its beauty and many benefits, the common sunflower is sure to brighten up any outdoor space or indoor flower arrangement.

Helianthus annuus Information

Common NamesCommon Sunflower
Native to USA
48 Continental States + DC
Introduced to USAAK, HI + PR
Introduced to CANAB, BC, MB, NB, NS, NT, ON, PE, QC SK
Introduced to FRASPM
Size8 feet tall

Frequently Asked Questions

Is Helianthus annuus edible?

Yes, Helianthus annuus is edible.

Is Helianthus annuus an invasive species of plant?

No, Helianthus annuus is not an invasive species of plant; it has been introduced in some parts of the world outside its native range.