Herboo Cosmos ‘Seashells Mixed’ seed packet showing pastel fluted cosmos illustration on plain background
Cosmos ‘Seashells Mixed’ flower with soft pink fluted petals opening in early summer
Fully open Cosmos ‘Seashells Mixed’ flowers in pastel pinks and whites growing in a cottage garden border
Mixed Cosmos ‘Seashells Mixed’ flowers, including white, rose and crimson fluted petals, in a wildflower-style planting

Cosmos 'Sea Shells Mixed' Seeds

Cosmos bipinnatus 'seashells'

Fluted romantic blooms, ideal as cut flowers, these pastel cosmos seeds bring soft colour and movement to summer gardens. With lacy foliage and beautiful pastel-coloured flowers resembling sea shells, this Cosmos bipinnatus variety plant will provide a constant display of colour all summer long. The tall, bushy plants with tubular petals in shades of white, pink, rose, and crimson will make a charming and eye-catching addition to any garden.

Approx 80 seeds

  • Cut Flowers
  • Pollinator-Friendly
  • Compact for Pots
  • Low Maintenance

Cosmos 'Sea Shells Mixed' Seeds – Quick Growing Guide

Cosmos 'Seashells Mixed' seeds produce charming, delicate flowers ideal for brightening gardens from summer to autumn. Sow seeds from March to September, either directly outdoors or in pots. They thrive in full sun with well-drained soil and require moderate watering. Expect blooms in 7 to 14 weeks, perfect for adding colour to borders and containers.

How to Sow, Grow and Harvest Cosmos 'Sea Shells Mixed' Seeds

  • Sow:March–September, direct or in pots
  • Germination:7–14 days
  • Grow:Full sun, well-drained soil, 30–45cm spacing
  • Water:Moderate, allow soil to dry between watering
  • Harvest:Pick flowers when fully open, summer to early autumn
  • Best for:Pots, beds, borders

Grow in Your Garden

Cosmos ‘Seashells Mixed’ Seeds – Elegant Cosmos bipinnatus Pastel Blooms

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5.0
Based on 2 reviews
100% would recommend this product
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2 reviews
21 Feb 2026

Bought Chamomile

I haven't planted the seeds yet but if they're as good as the ones I've brought in the past I'll be more than happy.

Fred J.Verified buyer
21 Feb 2026

LOVED

Got sent them as a gift and loved the instructions on sowing - very helpful

Posey C.Verified buyer