June 25, 2009
Oxeye Sunflower ( Heliopsis helianthoides )
There are several common names for oxeye sunflower, including false sunflower, sun glory, or orange sunflower. It is a close relative of the true sunflower, and its scientific name Heliopsis, means
“sun‐like” and “flower of the sun.” True to its name, this native perennial is easily grown in full sun, and while able to tolerate light shade, it may require staking or other support in deeper shade. The daisy‐ like flowers are 2 to 3 inches in diameter, with yellow‐orange petals and darker yellow to light brown centers. This colorful plant has a long summer bloom time, making it a good choice for any perennial border and an excellent source of freshcut flowers through the early fall.
Oxeye sunflower is a low maintenance plant that will grow in almost any soil, even poor ones. It tolerates drought, but does better if watered. Typically growing 3 to 5 feet tall, it can acquire a bushy appearance in open situations. Bees, wasps, butterflies, and other pollinators feed on its nectar, and oxeye sunflower is an excellent seed source for birds and other wildlife throughout the fall and winter months. Because it reseeds abundantly, it may occasionally be considered a weed. However, this plant does not spread by rhizome, and seed dispersal can easily be kept under control by deadheading the flowers in the autumn.
In short, oxeye sunflower is popular and desirable because of its long blooming season and ease of cultivation – it produces flowers all summer long while requiring little care and attention.
Photos by Wendy Carey/Delaware Sea Grant