Cosmos bipinnatus Seeds (Purity Cosmos)

Purity Cosmos, scientifically known as Cosmos bipinnatus, is an herbaceous plant species native to Mexico. It is commonly known as Cosmos. With delicate feathery foliage, it displays stunning white flowers, giving it the name “Purity Cosmos.” This plant typically grows around 2-4 feet tall. It is a hardy annual that can be grown in USDA hardiness zones 9-11. To grow Purity Cosmos, one can start with Cosmos bipinnatus seeds, which are readily available. With their enchanting appearance and ease of cultivation, Purity Cosmos is a popular choice for garden enthusiasts and pollinators alike.

Growing Cosmos bipinnatus from Seed

• Growth cycle: Annual
• Watering: Medium
• Sunlight: Full Sun
• Suitable climates: Arid, Highland, Humid Continental, Humid Subtropical, Marine West Coast, Mediterranean, Semiarid, Subarctic, Tropical Wet, Tropical Wet & Dry
• Where to grow: Outdoors
• Flower color: White

Germinating Purity Cosmos Flower Seeds

To germinate Cosmos bipinnatus seeds, sow them directly into nutrient-rich soil or seed trays. Keep the soil consistently moist and place in a warm, well-lit area. Seeds should start to germinate in approximately 7-14 days.

We source all of our Cosmos bipinnatus seeds from a small greenhouse facility based in southeastern Maine and store them in a dark, temperature-controlled environment before shipment. You’ll find that our fresh Purity Cosmos seeds are much easier to germinate than the mass-produced packets of flower seeds found in stores! If you have any trouble growing Purity Cosmos seeds, we’re happy to send you additional gardening tips. In the (unlikely) event that your Cosmos bipinnatus seeds do not germinate at all, we’ll give you a full refund, no questions asked.

We offer this variety on Etsy and eBay, as well!

Shipping & returns

Our complete shipping and return policies are available right here. Get free shipping on your order by adding additional seed packets to your cart!