Herboo Cosmos Seed Set packet showing botanical illustrations of Cosmos bipinnatus varieties: ‘Fizzy Pink’, ‘Seashells Mixed’, and ‘Sensation Mixed’.
Unfolding blooms of Cosmos bipinnatus ‘Fizzy Pink’, with frilled pastel-pink petals and bright yellow centres.
Distinctive tubular, fluted petals of Cosmos bipinnatus ‘Seashells Mixed’, showing soft pink and white tones.
Vibrant mixed blooms of Cosmos bipinnatus ‘Sensation Mixed’, featuring white, rose, and magenta petals around golden centres.
Flat lay of the Herboo Cosmos Seed Set with individual packets for Cosmos bipinnatus ‘Fizzy Pink’, ‘Seashells Mixed’, and ‘Sensation Mixed’ arranged neatly with seeds and garden props.

Cosmos Seed Set

complete love for cosmos flowers.

Enjoy a set of blooming Cosmos flowers to bring your garden space to life. Perfect seeds to grow in your pots, a front door or in a garden bed.

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

Cosmos Seed Set – Quick Growing Guide

This cosmos seed set offers easy-to-grow, summer-flowering plants perfect for UK gardens. These pollinator-friendly flowers thrive in full sun, producing vibrant blooms ideal for cut flowers. Sow from spring to early autumn for a colourful display that attracts bees and butterflies throughout summer.

How to Sow, Grow and Harvest Cosmos Seed Set

  • 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:Cut flowers when blooms open for longest vase life
  • Best for:Pots, beds, cut flower borders
  • Use:Attracts pollinators and brightens summer gardens

Grow in Your Garden

Colourful Cosmos Seed Set for Stunning Cut Flowers

Reviews

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4.7
Based on 3 reviews
100% would recommend this product
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3 reviews
26 Feb 2026

Quick Germination

Happy with how quick and easy germination was.

Robbie P.Verified buyer
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