Willow-leaved sunflower (Helianthus salicifolius)

Willow-leaved sunflower

Features and Characteristics

Helianthus salicifolius , commonly called willow-leaved sunflower, is a Missouri native plant that occurs in unglaciated western Missouri prairie areas south of the Missouri River. Features clusters (branched panicles) of 2-5″ wide sunflowers with bright yellow rays and dark brown center disks atop rigid, whitish-green stems typically growing 5-6′ (less frequently to 8′) tall. Narrow, drooping, willow-like, pale green leaves (5-7″). Attractive to butterflies and other insect pollinators. Blooms from late summer to fall. Good fresh cut flower.

Genus name comes from the Greek words helios meaning sun and anthos meaning flower.

Specific epithet means with leaves like Salix (willow).

Care and Maintenance

Easily grown in average, medium, well-drained soil in full sun. Tolerant of wide range of soil conditions. If grown in part shade, plants tend to be taller and more open, produce fewer flowers and require support. Spreads over time by creeping rhizomes to form dense colonies. Divide every 3-4 years to control spread and maintain vigor.

Willow-leaved sunflower (Helianthus salicifolius) Requirements

Hardiness zone	4 - 9
Sun light	Full sun
Water	Medium
Maintenance	Medium

Common Problems

Sunflowers are generally susceptible to rust, leaf fungal spots and powdery mildew. Caterpillars and beetles may chew on the foliage. Watch for aphids. Taller plants may need staking. Deer tend to avoid this plant.

Uses

Attractive foliage and profuse late summer to fall bloom make this an excellent addition to the border background, wild or native plant garden, or naturalized planting.

Willow-leaved sunflower (Helianthus salicifolius) Details

Common name	Willow-leaved sunflower
Botanical name	Helianthus salicifolius
Plant type	Herbaceous perennial
Family	Asteraceae
Hardiness zone	4 - 9
Water	Medium
Maintenance	Medium
Flower color	Yellow rays and dark brown center disks
Flowering period	September - Oc- ber
Height	8 - 10 ft.
Width	1 - 3 ft.