Heliopsis helianthoides ‘Gigantea’ – Ox Eye – Orange Sunflower –

Description

Heliopsis – Ox Eye – Orange Sunflower – There are about 13 species of perennials, in this genus.  They occur in dry prairies and open woodland in North America.  They have stiff, branching stems with opposite, ovate to lance shaped, toothed, 3 veined, mid or dark green leaves.  The solitary, terminal, sunflower like flowers are usually yellow and to 3″ across.  Unlike the petals of the sunflower (helianthus), those of Heliopsis are fertile.  Use in a herbaceous or mixed border, or in informal plantings.  Ox eyes also provide long lasting cut flowers. Easily grown in moderately fertile, humus rich, moist but well drained soil in full sun.  Divide every 2-3 years to maintain vigor.  Taller species and cultivars may need support.  Deadhead regularly. Prone to powdery mildew and rust. H. helianthoides – This clump forming perennial found from Ontario to Florida and Missouri grows 3-6′ feet tall and 2-3′ feet wide. It produces ovate to lance shaped, toothed, almost hairless, 3 veined, mid green leaves, to 6″ long. From mid summer to early autumn from branched stems it bears numerous, long stalked, single to double flowers, 1 ½-3″ across, with golden yellow petals and centers. ‘Gigantea’ – grows 4′ feet tall and has large, semi double, golden yellow flowers Zones 4-9