Sawtooth sunflower

Helianthus grosse-serratus

Photo/Illustration: 
R. Todd Davis
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Sawtooth sunflower (Helianthus grosse-serratus)
Synonyms:  Helianthus grosseserratus
Genus:  Helianthus
Sawtooth sunflower's abundant yellow daisy flowers bloom from late summer well into fall. The dark green, narrow leaves have a leathery gloss. A well-behaved plant, sawtooth sunflower forms a thick, slowly expanding clump. It can reach 10 feet and taller, depending on conditions.
Noteworthy Characteristics:  Adaptable to a variety of growing conditions. Contrasts nicely with ornamental grasses and other perennials in a border, even when not in bloom. Native from Maine to North Dakota, south to Virginia, west to Oklahoma.
Care:  Provide support if necessary. Moderately fertile, moist but well-drained soil in full sun.
Propagation:  Sow seed in containers in spring in a cold frame. Divide in spring or autumn. Take basal cuttings in spring.
Problems:  Downy and powdery mildews, canker, rust, and many fungal leaf spots are quite common. Caterpillars, cutworms, beetles, and weevils may attack plants.

Overview

Height
6 ft. to 10 ft.
Growth Habit
Clumps
Growth Pace
Moderate Grower
Light
Full Sun Only
Moisture
Medium Moisture
Maintenance
Moderate
Characteristics
Attracts Song Birds,
Attracts Butterflies,
Native,
Showy Flowers
Bloom Time
Early Fall,
Fall,
Late Summer
Flower Color
Primrose Yellow
Uses
Beds and Borders,
Cut Flower
Style
Meadow Garden
Seasonal Interest
Summer Interest
Type
Perennials

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