Alphabetical Plant Listing

Helianthus maximiliani (Maximilian Sunflower)

Maximilian Sunflower, Max Sunflower, Helianthus dalyi


A bold statement in the landscape, Helianthus maximiliani (Maximilian Sunflower) is a tall perennial with rigid, hairy stems clad with long and narrow, coarse and hairy, grayish-green leaves, usually folded lengthwise, and a profusion of brilliant yellow flowers, 2-3 in. across (5-7 cm). Produced from late summer into fall over about a six week period, each flower features up to 15-19 bright yellow rays surrounding a darker yellow central disk. They are borne on their own stalks and from the leaf axils. A valuable plant for wildlife (bees, birds and butterflies), this big and robust prairie perennial is a delight in large perennial gardens and wildflower meadows. It is not suited to the small perennial border as it needs room to spread.

  • Typically grows up to 3-10 ft. tall (90-300 cm) and 2-4 ft. wide (60-120 cm). May self-seed and form a large colony.
  • Prefers full sun in average, dry to medium, well-drained soils. However, this plant is not too fussy about soils and tolerates a wide range of conditions including dry soils. Drought tolerant.
  • Excellent choice for beds and borders, cottage gardens, bird or butterfly gardens, wildflower gardens, prairies and meadows.
  • Attractive to bird, butterflies, it is deer resistant.
  • Native to the Great Plains of central North America, and naturalized in the eastern and western parts of the continent

Learn How To Plant, Care and Grow Gorgeous Sunflowers

Cherished for their beauty, Sunflowers (Helianthus) are striking ornamental annuals or perennial plants grown for their colorful summer and fall blooms. Fast-growing, they can reward you with glamorous blooms between 55 and 100 days after planting. Here are some basic rules that need to be followed to enjoy their splendid flowers.Read More

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Requirements

Hardiness 4 – 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Helianthus - Sunflowers
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 3' – 10' (90cm – 3m)
Spread 2' – 4' (60cm – 120cm)
Spacing 48" (120cm)
Water Needs Low, Average
Maintenance Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Tolerance Clay Soil, Deer, Drought, Dry Soil, Rocky Soil
Attracts Birds, Butterflies
Garden Uses Beds and Borders
Garden Styles Informal and Cottage, Prairie and Meadow

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Helianthus - Sunflowers
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 3' – 10' (90cm – 3m)
Spread 2' – 4' (60cm – 120cm)
Spacing 48" (120cm)
Water Needs Low, Average
Maintenance Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Tolerance Clay Soil, Deer, Drought, Dry Soil, Rocky Soil
Attracts Birds, Butterflies
Garden Uses Beds and Borders
Garden Styles Informal and Cottage, Prairie and Meadow

Great Plant Combination Ideas with Helianthus - Sunflowers

Guides with Helianthus - Sunflowers

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