Helianthus divaricatus: Woodland Sunflower

helianthus divaricatusLatin name: Helianthus divaricatus
Common name: Woodland sunflower
Flowers: Yellow rays with darker yellow center disk12
Fruit: Not applicable10
Height & Width: 2-6’ x 1-3’12
Type: Herbaceous perennial10
Habit: Upright12
Wetland indicator category**: Not available17
Texture: Smooth12
Growth rate: Medium19
Light: Sun, part shade, shade10
Moisture: Dry to medium10
Soil*: Tolerates wide range of soil conditions12
Zones: 3-812
Origin: Eastern North America16
Features: Woodland sunflower is a prolific bloomer from mid summer to late fall and attracts birds and butterflies12. It also tolerates a wide variety of growing conditions, though it performs best in well-drained soil and part sun.12

Siting: Prefers well-drained to dry soils in part shade10, 12. Often found on the edges of woodlands or other naturalized plantings10, 19. Spreads by rhizomes to form colonies that may need to be divided every 3-4 years to control spread.10

Care: Plant crown at soil level18. At planting, water the roots and surrounding area slowly and deeply. Keep soil moist until plant is established, then apply enough water to thoroughly moisten the root zone when the soil is dry or during drought. Modify water recommendations to reflect site drainage and rainfall. Apply 3” of mulch over the planted area. Do not allow mulch to touch the plant stems18.

Pests: Plants are relatively pest resistant if cultural preferences are met.

This plant does not appear on the following invasive plant lists on (10/21/12):

X USDA SC Invasive Plant Species Web site at http://www.invasivespeciesinfo.gov/plants/main.shtml

X SC Exotic Plant Pest Council Web site at http://www.se-eppc.org/southcarolina/

Sources 1-18 found on Sources page