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Cosmos Sea Shells Red Seed brings a distinctive twist to the classic Cosmos look. The Sea Shells type is known for rolled, tubular petals that create a fluted flower form, giving sunny South African beds and cutting rows an unusual textural finish.
View the South Africa-specific grow guide: Cosmos Grow Guide for South Africa
Plant Information
- Plant Type: Annual
- Scientific Name: Cosmos bipinnatus
Growing Information
- General Sowing Time: Spring to early summer once frost risk has passed; in warm frost-free regions, sow while soil conditions are warm and settled.
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Position: Full sun
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Sow Depth: 5–6 mm
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Spacing: 30–45 cm
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Germination: 7–14 days at 20–22 °C
- Height: Sea Shells types are typically around 90 cm.
- Available Pack Sizes: 30 g raw seed
Why Grow Cosmos Sea Shells Red?
- Unique sea-shell petal form adds interest beyond standard Cosmos blooms.
- Red-toned flowers provide strong seasonal colour in sunny beds and borders.
- Excellent for cut flowers, pollinator gardens and cottage-style plantings.
- Easy, quick and rewarding from seed in warm conditions.
- Regular cutting helps keep plants flowering.
Garden Uses
Plant Cosmos Sea Shells Red where its unusual fluted petals can be seen up close: along paths, in cutting rows, in mixed annual borders or in pollinator-friendly displays. It works well with zinnias, sunflowers and other warm-season flowers that enjoy full sun.
Growing Notes
- Sow in warm soil after local frost risk has passed; avoid cold, waterlogged starts.
- Sow 5–6 mm deep, keep evenly moist through emergence and thin to 30–45 cm.
- Grow in full sun and avoid excessive nitrogen, which produces soft growth and fewer flowers.
- Shelter or discreetly support tall plants where strong wind and summer storms are common.
- Deadhead or cut stems regularly to encourage continued flowering.
Brought to you by Ubuntuberg Seeds, where our mission is to cultivate humanity & harvest unity. Ubuntuberg Seeds: the highest quality seed stock in all of Southern Africa, sourced from sustainable farms, guaranteeing you the best quality seed stock.
