Overview
Double-flowered Coreopsis (Coreopsis grandiflora 'Double Sunburst') is a showy perennial plant that has become a favorite among gardeners and landscapers. This cultivar is distinguished by its fully double, golden-yellow flowers that resemble small sunbursts. Unlike the single-flowered wild varieties, this cultivated form offers a more ornamental appearance while retaining the plant's natural hardiness. The plant typically grows 12-24 inches tall and spreads about 18 inches wide, forming attractive clumps of bright green foliage. Its long blooming period from early summer to fall makes it particularly valuable for continuous garden color. As a member of the Asteraceae family, it attracts pollinators while being resistant to deer and rabbits.
Product Features
The most striking feature of Double-flowered Coreopsis is its profusion of golden-yellow, double blooms that measure 2-3 inches across. Each flower consists of multiple layers of petals, creating a lush, ruffled appearance that lasts for weeks. The flowers are produced on sturdy stems above the foliage, making them excellent for cutting. This variety maintains the drought tolerance and heat resistance characteristic of Coreopsis species, thriving in USDA hardiness zones 4-9. It's particularly valued for its low maintenance requirements and ability to flourish in poor soils where other plants might struggle. The plant is also known for its resistance to common garden pests and diseases.
Main Uses
Double-flowered Coreopsis is primarily used as an ornamental plant in various gardening and landscaping applications. It works exceptionally well in perennial borders, cottage gardens, and wildflower meadows where its bright flowers create eye-catching displays. The plant's compact size makes it suitable for container gardening as well. In commercial landscaping, it's often planted in mass for dramatic effect or used in mixed plantings to provide continuous color. The long-lasting flowers are popular in floral arrangements, both fresh and dried. Some municipalities use this hardy plant in roadside plantings and public gardens due to its low water requirements and minimal care needs.
Culture and Development
Coreopsis species are native to North America, with many wild varieties found across the continent. The double-flowered cultivars were developed through selective breeding to enhance their ornamental value while preserving the plant's natural resilience. 'Double Sunburst' is one of the most successful of these cultivated varieties. The plant's popularity grew significantly in the late 20th century as gardeners sought low-maintenance, drought-tolerant plants. Its cheerful yellow flowers and long blooming season have made it a staple in many garden designs. Recent breeding efforts have focused on developing variations with different flower colors and improved disease resistance.
B2B Procurement Guide
When sourcing Double-flowered Coreopsis for commercial projects, consider purchasing from reputable nurseries that specialize in perennial plants. For large orders, it's advisable to buy well-established plants in 1-gallon containers or larger, as they establish more quickly in the landscape. Timing is important - spring and early fall are ideal planting seasons in most regions. Verify the plants are free from pests and diseases, with healthy root systems. For consistent quality, establish relationships with growers who can provide uniform plants in the quantities needed for your projects. Consider ordering in advance to ensure availability during peak planting seasons.
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