Eden Brothers
Cosmos Seeds - Double Click White Knight
Best low-maintenance choice for gardeners seeking elegant, pollinator-friendly cut flowers.
Elevate your garden with Double Click White Knight Cosmos seeds, producing charming annual flowers known for their large, fluffy double blooms and delicate, fern-like foliage. These open-pollinated seeds yield long-lasting white flowers throughout summer and fall. They are remarkably easy to grow, thriving even in poor soil and tolerating heat and drought. Ideal for cut flower arrangements or container gardens, these cosmos attract beneficial pollinators like bees and butterflies to sunny spots in your landscape, reaching a mature height of 36 inches.
$7.49
Owner Satisfaction
4.6
/ 5
Category Rank
3177
/ 6090
#3177 in Seeds & Seed Tape
Price vs Category Average
-29%
Below average
Botanical Name
Cosmos bipinnatus
/ Cosmos bipinnatus
Who it's for
- Gardeners seeking a luxurious, peony-like aesthetic
- Floral designers creating elegant, long-lasting indoor bouquets
- Beginner gardeners wanting reliable, low-maintenance blooms
Who should skip it
- Busy gardeners unable to commit to regular maintenance
- Minimalists wanting plants that do not require staking
- Pest-averse growers who prefer low-maintenance plant varieties
Performance breakdown
Growth Resilience
Thrives in poor soil and withstands heat with minimal intervention.
Pollinator Attraction
High-impact blooms effectively draw bees and butterflies to your landscape.
Bloom Longevity
Provides consistent white color from early summer through late fall.
Cut Flower Utility
Sturdy stems and fluffy double blooms excel in floral arrangements.
Ease of Cultivation
An ideal choice for beginners requiring very little maintenance to flourish.
Versatility
Adapts well to both garden beds and container-based planting setups.
Key Specs
Botanical Name
Cosmos bipinnatus
Seed Type
Open Pollinated Seed
Plant Type
Flower
Life Cycle
Annual
Plant Height
36 inches
Bloom Color
White
Planting Season
Spring
Days to Maturity
60 to 90 days
Features
- Produces large, fluffy double white blooms.
- Easy-to-grow annual variety for quick color.
- Long-lasting blooms throughout summer and fall.
- Attracts bees, butterflies, and hummingbirds.
- Tolerant of drought, heat, and poor soil.
- Excellent for cut flower arrangements.
- Thrives in full sun conditions.
- Adds elegant white color to any garden.
What customers say
Customer sentiment highlights the exceptional quality and reliability of these cosmos seeds. Gardeners are consistently thrilled by the unique, fully double blooms that deliver the sophisticated, fluffy texture promised. The ease of use is a major plus; many report strong germination rates even for novice growers. This dependability makes the White Knight a highly valued choice for adding dramatic, elegant texture to any sunny garden space.
Know before you buy
These cosmos typically reach a mature height of 36 inches. Because of their height, they work well in the middle or back of a flower border.
Yes, they are container-friendly. Ensure your pot is large enough to support their 36-inch height and provides excellent drainage, as they prefer full sun.
You can expect blooms throughout the summer and into the fall. They are known for being long-lasting, making them a reliable choice for consistent color.
They are remarkably low-maintenance and actually thrive in poor soil conditions. They are also heat and drought-tolerant, requiring only low water once established.
Absolutely. Their large, fluffy double blooms and sturdy stems make them an excellent choice for fresh-cut flower arrangements.
Yes, the White Knight variety is a magnet for beneficial pollinators, including bees, butterflies, and hummingbirds, helping to support your local ecosystem.
Still have a question?
Ask Hayley anything about this product before you decide.