Maximilian sunflower - Helianthus maximiliani (Care, Characteristics, Flower, Images)

Maximilian sunflower

The maximilian sunflower is a native perennial sunflower with tall stems and numerous, showy blooms that can grow up to 13 cm across. This sunflower spreads aggressively through rhizomes and while it isn’t great for small landscaping projects, it does attract wildlife with its prolific seeds.

Scientific classification

Species

Maximilian sunflower (Helianthus maximiliani)

Asters bellflowers fanflowers and allies

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Perennial

Lifespan

Herb

Plant Type

Summer, Fall

Bloom Time

Summer, Fall

Harvest Time

91 cm to 3 m

Plant Height

60 cm to 1.2 m

Spread

Green

Leaf Color

8 cm to 15 cm

Flower Size

Brown, Black, Copper

Fruit Color

Yellow, Brown

Flower Color

Green, Red

Stem Color

Winter dormancy

Dormancy

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Summer, Fall

Growth Season

Rapid

Growth Rate

Images of Maximilian sunflower

Attributes of Maximilian sunflower

Growth Rate

During Summer and Fall, maximilian sunflower exhibits a rapid growth rate. This speed translates into a surge in leaf production and a noticeable increase in height, providing maximilian sunflower with its towering stature. The rapid growth notably orchestrates early and abundant blooming during Fall, making maximilian sunflower a vibrant staple in these seasons. Despite fluctuations in growth during other seasons, the Summer to Fall transition marks maximilian sunflower's most active growing period.

Distribution of Maximilian sunflower

Distribution Map

Maximilian sunflower is originally native to North America, with a range that includes the central and eastern regions of the continent. As an adaptable species, it has been introduced and cultivated in various temperate areas worldwide, including regions of Europe. Its cultivation status is established beyond its native habitat, where it has adapted to a variety of settings.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Rich prairies, low moist areas, roadsides, prairies

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

Maximilian sunflower is a perennial sunflower species valued ornamentally for its bright yellow blooms. It is planted in country gardens, perennial gardens, and wildflower meadows. This species is considered easy to grow and attracts bees and butterflies. Maximilian sunflower isn't suited for planting on perennial borders because it requires room to spread for proper growth.

Symbolism

Fertility, Wishes, Health

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Quickly Identify Maximilian sunflower

Stems reach 6 to 8 feet (183 to 244 cm) tall, towering over surroundings.

Lance-shaped leaves 1 to 3 inches (2.5 to 7.6 cm) long with slight undulations.

Bright yellow blooms, 3 to 4 inches (7.6 to 10.2 cm) wide, in fall.

Flowers have 15-19 deeply veined, toothed ray flowers with green to brown disk.

Leaves are elongated, up to 10 inches (25 cm) long, purple in fall.

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Care Guide for Maximilian sunflower

Twice per week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Maximilian sunflower, native to North America's prairies, thrives in well-drained soil and can endure short dry spells. Regular watering, ideally twice a week, supports its growth. Maximilian sunflower prefers full sun and utilizes deep roots to access moisture, reducing reliance on rainfall.

Fertilize: Maximilian sunflower thrives with balanced fertilizers, ideally a 10-10-10 NPK ratio, applied biannually in early spring and mid-summer. Use 1-2 lbs per 100 sq ft, avoiding over-fertilization. Switch to bloom-boost formulations during budding, adjusting based on soil fertility.

Pruning: Maximilian sunflower thrives with pruning to manage height and promote bushier growth. Trim in early to late spring, removing weak stems for better air circulation. Cutting back by one-third encourages branching, ensuring longevity and vibrant blooms, making regular maintenance essential for optimal health.

Propagation: Maximilian sunflower is propagated by sowing seeds in well-draining soil and a sunny location. Plant seeds shallowly for light-based germination, keep soil moist but not waterlogged, and thin seedlings to avoid overcrowding. Maintain a stable environment and consider stratification for dormant seeds.

Repotting: Repot maximilian sunflower every 2-3 years in early spring using a large, deep container for its roots. After repotting, place maximilian sunflower in full sun with well-drained soil and water regularly to support recovery. Ensure maximilian sunflower has ample space and sunlight for optimal growth.

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