Cosmos Sensation Tall Mix - Cosmos bipinnatus

Cosmos Sensation Tall Mix - Cosmos Plant

We do not ship annuals

Sensation Tall Cosmos are an annual open pollinated heirloom variety with single blooms. The beautiful flowers measure three to five inches across and pollinators are very attracted to these flowers for their pollen and nectar. 

• Sun Exposure: Full Sun 
• Flower Color: Mixed - Red, White, Pink
• Bloom Time: Summer to Fall
• Soil Type: Medium well drained 
• Mature Plant Size: 60"
• Plant Spacing: 1'
• Attracts: Bees, Birds, Butterflies, Hummingbirds
• Advantages: Heat tolerant, drought tolerant, easy to grow, deer resistant, rabbit resistant.
• Landscape Uses: Cottage gardens, cut flowers, pollinator gardens

Seasonal Timeline for Cosmos Plant

The cosmos plant follows a simple seasonal pattern, starting with early growth and moving into full bloom, and eventually, to seed production. When grown with native perennials, it helps keep the garden colorful and active through the warm months.

• Early growth stage (germination to establishment): Seeds usually sprout within 7–14 days when the soil is warm. At first, most growth happens underground as roots develop and strengthen. Above ground, the plant grows soft, feathery leaves.
• Peak bloom period (mid-summer to early fall): Once established, the cosmos plant grows quickly and begins producing many flowers. It also becomes a steady food source for bees and butterflies.
• Late season transition (late summer to frost): As the weather cools, flowering slowly slows down. The plant begins forming seeds instead of new blooms, with some seeds falling into the soil and growing in the next season again if conditions are right. Even so, it can still support late-season pollinators when other flowers are fading.

Grow your cosmos plant today with Bagley Pond Perennials or contact us to learn more.

Frequently Asked Questions

Will cosmos reseed itself in the garden?

Yes. In many climates, it can self-seed lightly; but the resulting plants may vary in vigor depending on soil conditions and winter temperatures.

How long does its bloom cycle last?

With regular deadheading, flowering can continue from midsummer until the early fall season.

Should this plant be fertilized for the best results?

Cosmos plant needs minimal fertilization because excess nutrients can reduce flowering and encourage excessive leaf growth. A lean soil often produces stronger bloom cycles and more compact but abundant plants.

Do cosmos require staking in garden beds?

Usually not, but in highly fertile soils or windy open sites, light staking or planting among supportive companions can help maintain upright growth without compromising their natural movement.