Maximilian Sunflower

(Helianthus maximiliani)

Maximilian Sunflower (Helianthus maximiliani)

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Estimated Native Range
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Summary

Helianthus maximiliani, commonly known as Maximilian Sunflower, is a deciduous perennial herb native to North American prairies, particularly in the Great Plains and adjacent areas. It is well-adapted to open areas with full sun exposure, thriving in various soil types from well-drained sandy soils to clay. This sunflower species can reach heights of 0.5–3.0 m (1+1⁄2–10 ft) and is characterized by its slender, tall, erect stems and rough-haired, alternately-arranged lance-shaped leaves. The leaves are narrow, pointed, and can be up to 30 cm (12 in) long on larger plants. From late summer to fall, Maximilian Sunflower produces showy flower heads with a center of yellow-tipped brown disc florets and a fringe of bright yellow ray florets 2–4 cm (1–1+1⁄2 in) long, which are highly attractive to pollinators.

Maximilian Sunflower is valued for its ability to provide a late-season nectar source for bees and butterflies, and its seeds are favored by birds. It is often used in naturalized plantings, prairie restorations, and as a tall border in gardens. This plant is relatively low maintenance, tolerating drought and poor soils, although it prefers full sun and can adapt to a range of drainage conditions. It can spread vigorously by rhizomes and may require management to prevent it from becoming too aggressive in a garden setting. Despite its potential for invasiveness, it is not typically a problem when grown within its native range.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 3-10 feet
  • Width: 2-4 feet
  • Growth Rate: Rapid
  • Flower Color: Yellow
  • Flowering Season: Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Medium
  • Drainage: Fast, Medium, Slow

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Drought Tolerant, Erosion Control, Fire Resistant, Groundcover, Low Maintenance, Rabbit Resistant, Showy Flowers

Natural Habitat

Native to North American prairies, particularly in the Great Plains

Other Names

Common Names: Maximilian’s Sunflower , Michaelmas Daisy , Narrow-Leaved Sunflower , Max Sunflower , Hélianthe De Maximilien

Scientific Names: Helianthus maximiliani , Helianthus dalyi , Helianthus maximiliani var. asperrimus , Helianthus maximiliani var. dalyi , Helianthus maximiliani var. iubaris , Helianthus maximiliani var. paniculata , Helianthus maximiliani f. maximiliani , Helianthus maximiliani f. pallidus , Helianthus maximiliani var. maximiliani

GBIF Accepted Name: Helianthus maximiliani Schrad.