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Helianthus maximiliani (Maximilian Sunflower)

Maximilian Sunflower, Max Sunflower, Helianthus dalyi

Helianthus maximiliani, Maximilian Sunflower, Perennial Sunflower, Perennial Helianthus, Yellow Flowers, Yellow Perennials

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 birds and 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.

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 Compositae
Genus Helianthus
Common names Sunflower, Maximilian Sunflower
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 3' - 10'
(90cm - 3m)
Spread 2' - 4'
(60cm - 120cm)
Spacing 48" (120cm)
Maintenance Average
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Native Plants United States, New York, New Jersey, Maryland, Pennsylvania, Connecticut, Massachusetts, Maine, Southwest, California, Rocky Mountains, Pacific Northwest, Southeast, Northeast, Midwest, Missouri, Michigan, Nebraska, Wisconsin, Kansas, Iowa, North Dakota, Minnesota, South Dakota, Ohio, Illinois, Indiana, Idaho, Washington, Tennessee, South Carolina, North Carolina, West Virginia, Virginia, Arkansas, Alabama, Mississippi, Kentucky, Texas, New Mexico, Oklahoma, Wyoming, Montana, Colorado
Tolerance Drought, Deer, Dry Soil, Rocky Soil, Clay Soil
Attracts Bees, Birds, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage
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Alternative Plants to Consider

Helianthus annuus ProCut® White Nite (Common Sunflower)
Helianthus annuus ProCut® Red (Common Sunflower)
Helianthus annuus ‘Sunrich Summer Provence’ (Common Sunflower)
Helianthus annuus ‘Sunrich Gold’ (Common Sunflower)
Helianthus annuus ‘Sunny Smile’ (Common Sunflower)
Helianthus annuus ‘Velvet Queen’ (Common Sunflower)

Find In One of Our Guides or Gardens

How to Choose the Perfect Sunflower for Your garden and Pots
10 Reasons Why You Should Grow Sunflowers in Your Garden
Companion Planting With Annuals
Edible Flowers: 16 Varieties to Beautify Your Garden and Plate
Best Annual Flowers For Your Vegetable Garden
Best Annual Flowers and Plants for Full Sun
Learn How To Plant, Care and Grow Gorgeous Sunflowers
39 Most Beautiful Sunflower Types for Your Garden
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.
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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 Compositae
Genus Helianthus
Common names Sunflower, Maximilian Sunflower
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 3' - 10'
(90cm - 3m)
Spread 2' - 4'
(60cm - 120cm)
Spacing 48" (120cm)
Maintenance Average
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Native Plants United States, New York, New Jersey, Maryland, Pennsylvania, Connecticut, Massachusetts, Maine, Southwest, California, Rocky Mountains, Pacific Northwest, Southeast, Northeast, Midwest, Missouri, Michigan, Nebraska, Wisconsin, Kansas, Iowa, North Dakota, Minnesota, South Dakota, Ohio, Illinois, Indiana, Idaho, Washington, Tennessee, South Carolina, North Carolina, West Virginia, Virginia, Arkansas, Alabama, Mississippi, Kentucky, Texas, New Mexico, Oklahoma, Wyoming, Montana, Colorado
Tolerance Drought, Deer, Dry Soil, Rocky Soil, Clay Soil
Attracts Bees, Birds, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Helianthus (Sunflower)
Not sure which Helianthus (Sunflower) to pick?
Compare Now

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