Cosmos 'Sensation' Seeds
Cosmos bipinnatus ‘sensation’
Cosmos ‘Sensation’ (Cosmos bipinnatus) is a classic cottage-garden cut flower with tall stems, feathery foliage and masses of daisy-like blooms in pinks, whites and soft magentas. Flowering from late summer into autumn, it adds height and movement to sunny borders and pots — and it’s one of the easiest cosmos seeds to grow.
Approx 80 seeds
- Cut Flowers
- Pollinator-Friendly
- Pot Fans
- Fuss Free
Cosmos 'Sensation' Seeds – Quick Growing Guide
Cosmos ‘Sensation’ is an easy Cosmos bipinnatus mix for tall, airy summer flowers. Sow from March to September; germination is usually 7–14 days. Grow in full sun with well-drained soil for months of blooms — brilliant for cut flowers, borders and pots.
How to Sow, Grow and Harvest Cosmos 'Sensation' Seeds
- Sow:March–September, direct or in pots
- Germination:7–14 days
- Grow:Full sun, well-drained soil, thin seedlings to 30cm apart
- Water:Moderate watering; drought tolerant once established
- Harvest:Pick flowers as they open for best vase life
- Best for:Cut flower gardens, borders, large pots, pollinator patches
These easy-to-grow Cosmos bipinnatus produce daisy-like blooms in shades of pink, white and purple. They grow up to 90cm tall, perfect for adding height and vibrancy to borders or containers. Ideal for cut flowers and attracting pollinators.
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Grow in Your Garden
Calendar
How to Grow
Cosmos 'Sensation' seeds can be sown indoors from March or directly outdoors after the last frost, thriving best in full sun with well-drained soil. Starting them in pots allows for a head start before transplanting to balconies, containers, or garden beds.
Sowing
Sow one seed per hole on firm, damp soil and cover lightly, ensuring they remain in full sun to aid germination. Sow between March and June for optimal results.
Growing
Thin seedlings to 30–40cm apart to support their tall, airy growth and prevent overcrowding, suitable for the recommended 40cm pot size. This spacing encourages strong, upright plants that flourish from June through October.
Plant care
Water regularly during dry spells but avoid overfeeding to prevent excessive leafy growth at the expense of blooms. Pinch out growing tips when plants reach 20–25cm to promote bushier plants and deadhead frequently to encourage continuous flowering into autumn; tall stems may require staking in windy conditions.
About Cosmos 'Sensation'
Easy and rewarding, Cosmos bipinnatus ‘Sensation’ is ideal for borders and large pots, loved by bees and butterflies, and one of the best beginner-friendly cut flowers for long-stemmed summer picking.
- Cut Flowers
- Pollinator-Friendly
- Pot Fans
- Fuss Free
Eventual height & spread
History of Cosmos 'Sensation'
The name 'Cosmos' comes from the Greek word for 'ordered universe', inspired by the flower’s perfectly arranged petals. Historically cultivated in Spanish mission gardens, these flowers bring harmony and beauty to your garden.
| Other Names | Garden cosmos and Mexican aster. |
|---|---|
| Pet/Baby Safe | Non-toxic |
FAQs
Very easy — they thrive with minimal care and reward you with months of blooms.
They bloom from late summer to autumn.
Absolutely, they thrive in containers and garden beds.
Cosmos ‘Sensation’ is an annual (one season), but it often self-seeds if you leave a few flower heads to mature, so you may see it return next year.
Yes — long stems, quick growth and repeat flowering make them ideal for cutting.
Around 80–100cm, perfect for adding height to borders or the back of containers.
Yes, they flower best in a sunny position with well-drained soil.