Radiance Cosmos Seeds – 100 Count

Southern Seeds was founded in 2019 by Ryan and Kim Dorn and became Seed Therapy in 2025. The family business moved its operations to the Dallas, Texas, area in 2023. Drawing on generations of growing experience, the team focuses on dependable seeds, personal customer service, and helping gardeners succeed. Its work includes relationships with American farms and seed donations to schools and community gardens.

Bring a burst of vibrant, show-stopping color to your garden with Radiance Cosmos. An esteemed All-American Selections winner, this variety truly lives up to its name, producing large, brilliant blooms that command attention. The intricate petals display a stunning range of deep pinks and reds, creating a dazzling visual display all season long. Easy to grow and perfect for cutting, Radiance Cosmos will infuse your garden beds and bouquets with life and dramatic color.

Explore more flower seeds and garden seeds and growing essentials at BuyAmerican.

• Award-Winning Beauty: An All-American Selections (AAS) winner, recognized for its stunning performance.
• Vibrant, Show-Stopping Color: Produces an abundance of large blooms in shades of deep pink and red.
• Excellent for Bouquets: Long stems make it a perfect, long-lasting cut flower.
• Attracts Pollinators: A favorite of bees and butterflies, bringing life to your garden.

• Plant Name: Radiance Cosmos (Cosmos bipinnatus)
• Seed Quantity: Approx. 100 seeds
• Type: AAS Winner, Heirloom, Non-GMO
• Lifecycle: Annual
• USDA Zone: 2-11
• Origin: American Grown

Sold as seeds for planting. Select this packet by its variety, quantity, and growing requirements; it is not a live plant.

Country of origin: United States. The supplier identifies this product as American-grown.

• Sowing: Direct sow seeds outdoors after all danger of frost has passed.
• Depth: Plant seeds 1/4 inch deep.
• Spacing: Space plants 12-18 inches apart.
• Light Requirement: Full Sun.
• Soil: Thrives in average, well-draining soil.
• Watering: Keep soil moist until germination (7-14 days); water regularly until established.
• Care: Deadhead spent blooms to encourage continuous flowering throughout the season.

Keep unused seeds dry and cool in a clearly labeled, closed container. Protect the packet from humidity and temperature swings, and retain the variety name and sowing notes for your next planting. Use the species-specific directions below when deciding whether to start indoors, sow directly, soak seeds, or provide a cold period. Germination and growth vary with seed handling and local growing conditions.

For general seed-starting and storage guidance, see University of Minnesota Extension’s seed-starting guide. Use the variety-specific packet directions for this product.

Shipping for this product

This product ships directly from Southern Seeds, now Seed Therapy. The supplier currently lists standard processing of 1–3 business days, increasing to approximately 3–5 business days during the busy late-December-through-April-or-May seed season. Processing is separate from carrier transit time. Its published standard shipping rate is $4.99 per order, with free standard shipping at a merchandise subtotal of $35 or more after discounts and before taxes. The options, offers, and final charges displayed at BuyAmerican checkout govern this order; purchases from other makers may ship separately. Carrier delivery dates are estimates. The supplier ships within the United States and may restrict certain seeds by destination.

Returns and seed guarantee

For this product, Southern Seeds/Seed Therapy publishes a 60-day satisfaction guarantee, offering an eligible replacement or product-price refund for concerns reported within 60 days of delivery. Original shipping is generally excluded. Preference-based physical returns generally require customer-paid return shipping; supplier errors or damaged or defective items receive an appropriate resolution without an additional return-shipping charge. Contact BuyAmerican at hello@buyamerican.com with your order number, product name, and concern before mailing anything back. BuyAmerican’s standard return policy provides a 30-day request period for eligible unused items in original packaging. Ask BuyAmerican to coordinate any supplier guarantee request for your marketplace order.

Read the BuyAmerican return policy or contact BuyAmerican order support before a return.