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 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.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 |
| Native Plants | United States, California, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Maine, Massachusetts, Maryland, New Jersey, New York, Pennsylvania, Pacific Northwest, Idaho, Washington, Rocky Mountains, Colorado, Montana, Wyoming, Southeast, Alabama, Arkansas, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Southwest, New Mexico, Oklahoma, Texas |
| Tolerance | Clay Soil, Deer, Drought, Dry Soil, Rocky Soil |
| Attracts | Bees, 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 |
| Native Plants | United States, California, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Maine, Massachusetts, Maryland, New Jersey, New York, Pennsylvania, Pacific Northwest, Idaho, Washington, Rocky Mountains, Colorado, Montana, Wyoming, Southeast, Alabama, Arkansas, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Southwest, New Mexico, Oklahoma, Texas |
| Tolerance | Clay Soil, Deer, Drought, Dry Soil, Rocky Soil |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Beds and Borders |
| Garden Styles | Informal and Cottage, Prairie and Meadow |
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