Helianthus maximiliani (Maximilian Sunflower)

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Helianthus maximiliani (Maximilian Sunflower) is a perennial flowering plant native to North America. It is a member of the Asteraceae family and is known for its tall stature and abundance of bright yellow flowers. Maximilian Sunflower is a tall perennial that typically grows to a height of 3 to 10...
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Helianthus maximiliani (Maximilian Sunflower) is a perennial flowering plant native to North America. It is a member of the Asteraceae family and is known for its tall stature and abundance of bright yellow flowers.

Maximilian Sunflower is a tall perennial that typically grows to a height of 3 to 10 feet (0.9 to 3 meters) and spreads about 2 to 4 feet (0.6 to 1.2 meters) wide. It has slender, branching stems that are covered in rough, hairy foliage. The leaves are lance-shaped and toothed. The plant produces numerous flower heads in branching clusters at the top of each stem.

The flowers of Maximilian Sunflower are the highlight of this plant. Each flower head consists of a dark brown center, known as the disc florets, surrounded by bright yellow ray florets. The ray florets are typically numerous and slightly drooping, creating a radiant display. The flower heads are relatively small compared to some sunflower species, reaching up to 2 inches (5 cm) in diameter.

Maximilian Sunflower typically blooms from late summer to fall, depending on the specific growing conditions and climate. The flowering period can last several weeks, providing a burst of late-season color and attracting pollinators to the garden. The bright flowers of Maximilian Sunflower are attractive to various pollinators, including bees, butterflies, and other beneficial insects. They provide a valuable nectar source late in the season when other flowers may be scarce. The seeds produced by the plant are also highly favored by birds, making Maximilian Sunflower a valuable addition to wildlife gardens.

Helianthus maximiliani thrives in full sun and well-drained soil. It is adaptable to a range of soil types, including sandy or loamy soils, but prefers soil that is not overly fertile. Maximilian Sunflower is highly tolerant of drought and is often found in prairies, meadows, and other dry habitats. Once established, it requires minimal watering.

Maximilian Sunflower is generally low-maintenance. Deadheading spent flowers can help promote prolonged blooming and prevent self-seeding if desired. However, allowing some seed heads to mature can provide food for birds and contribute to the natural reseeding of the plant. The tall stems may benefit from staking to prevent them from bending or breaking under windy conditions.

Helianthus maximiliani can be grown from seeds. Sow the seeds directly into the garden soil in early spring or late fall. The seeds may benefit from a period of cold stratification for successful germination. Provide adequate spacing between plants to accommodate their size. Maximilian Sunflower is often grown in prairie or wildflower gardens, as well as for erosion control and habitat restoration projects.

Maximilian Sunflower (Helianthus maximiliani) is a stunning perennial plant that brings late-season beauty and wildlife attraction to gardens and landscapes. With its tall stature, bright yellow flowers, and adaptability to various growing conditions, it is a valuable addition for supporting pollinators and enhancing biodiversity. Whether grown for its ornamental value or to create naturalistic habitats, Maximilian Sunflower can make a striking statement in the garden.

Number of Seeds Max Coverage Area (Square Ft.)
1OZ 10,625 500
1/4LB 42,500 2,000
1/2LB 85,000 4,000
1LB 170,000 8,000
5LB 850,000 40,000

Scientific Name: Helianthus Maximiliani

Common Name: Maximilian Sunflower

Plant Type: Perennial

Family: Asteraceae

Native Range: West, Southwest and Pacific America

Full Growth Height: 60-96"

Spread: 48 "

Zone: 4-9

Ease of care: Easy to grow

Exposure:  Full Sun

Suitability: High heat

Blooming Season: Early to mid-fall

Attracts: Bee friendly, Attracts butterflies and birds

Flower Shape: Disc shaped

Flower Color: Yellow ray flowers, Yellow brown disk

Moisture: Dry, Moderate

Maintenance: Low

Resistant: Deer and Rabbit Resistant

Water Requirement: Low Water

Soil Type: Sandy soil, Clay soil, Average soil

Soil pH: Alkaline soil

Uses: Source of food, oil, dye and thread.

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