Cosmos ‘Xanthos’
Cosmos bipinnatus
Description
A delicate pale yellow flower with green undertones, this dainty variety is petite in stature. Unique ruffled flowers have a subtle inner collar and pale throat, and blossoms have a dark yellow eye encircled by tiny fringed petals with pale serrated tips. Adds dimension to the cutting garden or flower border and is one of the easiest and most productive cut flowers per square foot you can grow.
Details
Plant type: annual
Height: 24 to 36 in
Site: full sun
Days to maturity: 75 to 90 days
Plant spacing: 12 in
Pinch: when 8 to 12 in tall
Height: 24 to 36 in
Site: full sun
Days to maturity: 75 to 90 days
Plant spacing: 12 in
Pinch: when 8 to 12 in tall
Seed Sowing & Growing Notes
Start seed indoors in trays 4 to 6 weeks before last frost; transplant out after all danger of frost has passed. Cosmos can also be direct-seeded once the weather has warmed.
Harvesting/Vase Life
Harvest when buds are just cracking, but haven’t fully opened. For double varieties, let open halfway before picking. Expect a vase life of 5 to 6 days.
Details
Description
A delicate pale yellow flower with green undertones, this dainty variety is petite in stature. Unique ruffled flowers have a subtle inner collar and pale throat, and blossoms have a dark yellow eye encircled by tiny fringed petals with pale serrated tips. Adds dimension to the cutting garden or flower border and is one of the easiest and most productive cut flowers per square foot you can grow.
Details
Plant type: annual
Height: 24 to 36 in
Site: full sun
Days to maturity: 75 to 90 days
Plant spacing: 12 in
Pinch: when 8 to 12 in tall
Height: 24 to 36 in
Site: full sun
Days to maturity: 75 to 90 days
Plant spacing: 12 in
Pinch: when 8 to 12 in tall
Seed Sowing & Growing Notes
Start seed indoors in trays 4 to 6 weeks before last frost; transplant out after all danger of frost has passed. Cosmos can also be direct-seeded once the weather has warmed.
Harvesting/Vase Life
Harvest when buds are just cracking, but haven’t fully opened. For double varieties, let open halfway before picking. Expect a vase life of 5 to 6 days.
Sources
How to Grow
Sources
How to Grow
Winter Mini Course: Seed-Starting 101
Learn how to start flowers from seed in this three-part video series
In our upcoming Winter Mini Course, you’ll learn everything you need to know to successfully start flowers from seed, including all of the necessary supplies, step-by-step instructions, special tips and tricks, and how to create a simple indoor seed-starting area.
