Maximilian Sunflower brings the wild spirit of the Tallgrass prairie into your garden as a hardy perennial that returns reliably year after year. Unlike the single-season giants most gardeners know, this tough plant spreads via rhizomes to form expanding colonies of deep green foliage, then erupts into golden bloom when most other flowers fade. Rising 60 to 96 inches tall on unbranched stems, it delivers masses of three-inch golden flowers from August through frost, thriving in full sun to partial shade across zones 4 through 4. With 100 to 120 days to maturity, it's a late-season spectacle that transforms the autumn garden.
18
Full Sun
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4-4
96in H x 24in W
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Moderate
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The magic lies in its timing and tenacity. While annual sunflowers dominate mid-summer gardens, Maximilian saves its show for season's end, offering waves of cheerful blooms when the rest of the garden is winding down. It spreads across the landscape through underground rhizomes, gradually forming lush colonies that require no replanting year after year. The plants are ruggedly built, standing tall and sturdy without the branching complexity of ornamental varieties, creating striking vertical lines in the late-season border.
Maximilian Sunflower serves primarily as an ornamental plant, valued for its tall, dramatic presence in late-season borders and prairie-style gardens. Its masses of golden blooms provide critical late-season color when most perennials have faded, making it especially valuable for extending visual interest into autumn. The flowers attract pollinators and seed-eating birds, adding ecological purpose to its ornamental role.
No timeline data available yet for this variety.
Transplant established plants or divisions outdoors in spring after the last frost date, ensuring soil has warmed. Space plants 18 inches apart in rows 24 inches apart to accommodate their rhizomatous spread.
Maximilian Sunflower requires minimal pruning due to its natural unbranched, single-stem growth habit. Allow plants to stand through fall and early winter for visual appeal and wildlife benefit; cut back to ground level in late winter or early spring just before new growth emerges.
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“Maximilian Sunflower carries the prairie in its name and in its nature. This perennial species arrived in cultivation from the wild Tallgrass prairie ecosystem, where it evolved to thrive in challenging conditions and return faithfully each season. Its journey into gardens represents a shift toward using native prairie plants for sustainable, low-maintenance ornamental landscapes, honoring both ecological resilience and horticultural practicality.”