Plant Height
12-36 inVariety-specific habit
Best Seller
flower
Red Double Petals Sulfur Cosmos Seeds
$7.99
Seeds for your next garden project, with planting guidance to help you get started.
In stock — ships within 1 business day
Standard shipping to the USA: 4–6 business days.
Germination SupportPractical guidance when you need it
USA Garden FriendlySeeds selected for USA gardens
Secure CheckoutProtected payment experience
Growing at a Glance
Plan your sowing with the light, space and growing conditions this flower needs.
Light Requirement
Bright Indirect Light, Partial Shade
Planting Season
SpringFollow local frost dates
USDA Zone
Zone 2~12Selected for USA gardens
Germination
7-21 DaysKeep evenly moist
Days to Maturity
70-120 DaysVariety dependent
Plant Spacing
8-18 inAllow healthy airflow
Growing Difficulty
EasyGrowing support available
Flower Performance
Picture this variety in your garden, from its flower colors to when it blooms.
Flower Color
Red
Bloom Period
Summer, Late Summer, Fall, Until Frost
Life Cycle
AnnualAnnual, biennial or perennial
Garden Use
Borders, Pollinator Gardens, Wildflower Meadows, BedsBest-fit garden settings
Shipping & Returns
Simple delivery. Clear support.
Shipping
Most orders ship within 24 hours of payment confirmation, excluding weekends and U.S. federal holidays. Standard transit takes 4–6 business days.
Returns & order issues
Customers may return seed products within 30 calendar days of delivery, including unopened, opened or used items. We cover return shipping for quality issues, shipping errors or transit damage.
Seeds are living products. If you have germination questions, our team provides practical growing guidance to help you troubleshoot.
About this seed
Why gardeners choose this variety
Red double petals sulfur cosmos (Cosmos sulphureus) is a heat-tolerant annual featuring fully double, red flowers. Plants have finely divided, airy foliage. Reaches 1–3 feet tall. Blooms from summer to fall.
Key features
What makes it stand out
Perfect for
Best garden uses
Growing tips
