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Cosmos Fizzy Purple Flower Seeds

Botanical Name: Cosmos bipinnatus

Striking purple blooms with unique ruffled centres
Long-lasting flowers ideal for cutting
Attracts pollinators to the garden

50 SeedsSKU: 33088

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£3.98

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High germination rates

Expert growing support available

DescriptionDetailsSow & GrowGrow InPlanting CalendarDelivery

Cosmos Fizzy Purple Flower Seeds is a striking twist on a classic favourite, producing tall, bushy plants with soft, attractive foliage. The large purple blooms are beautifully detailed with an unusual inner ruff of petals, creating eye-catching displays throughout summer. Free flowering and vigorous, this variety is ideal for mixed borders and cutting gardens, while also attracting pollinators to your outdoor space. A superb choice for adding colour, texture and natural charm.

Key information

Botanical Name: Cosmos bipinnatus

Genus: Cosmos

Plant Class: Half Hardy Annual

Characteristics & growing conditions

Plant Height: 120cm/4ft.

Colour: Purple

Habitat: Bushy,Upright

Position: Dappled Shade and Full Sun

Attractive to: Attractive To Bees and Attractive To Butterflies

Sow Indoors : February-April, thinly 0.5cm/quarter-inch deep, in pots or trays of compost. Transplant to larger pots or trays if necessary. Harden off then plant out May-June, spacing 30cm/1ft. apart. Sow Outdoors : April-May, thinly 0.5cm/quarter-inch deep, direct in flowering position. Allow 30cm/1ft between rows. Thin seedlings to 30cm/1ft apart. Tips : Keep moist. Remove dead flower heads to encourage further blooms. Flowers : June-October.

Recommended growing locations.

Bedding

Border

Container

Patio

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Sow Indoors

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Sow Outside

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Flowers / Harvest

J Jan F Feb M Mar A Apr M May J Jun J Jul A Aug S Sep O Oct N Nov D Dec

Hassle-Free Delivery

Looking for a hassle-free way to get your gardening essentials? Look no further than DT Brown! We know how important your garden is to you, and want you to be able to stock up on everything you need. All our delivery charges will automatically appear in your shopping basket.

Seed Only Orders

£2.95 delivery charge

Non-Seed Items

£6.95 delivery charge

Combined Orders

£7.95 delivery charge (e.g. seeds and plants)

£3.98

FAQs

What is the best month to plant Cosmos?

Cosmos seeds can be sown indoors or under cover in early spring, or directly outdoors towards the end of spring and into early summer. Plants will flower from June through September, often continuing into October.

Sow indoors: February–April, 0.5cm deep in pots of seed compost. Keep moist and warm at 15–20°C. Transplant seedlings to individual pots when large enough to handle, then gradually harden off before planting out in late May–June.
Sow outdoors: April–May, 0.5cm (¼in) deep in their flowering position. Thin seedlings to 30cm apart.

Will Cosmos come back year after year?

Most Cosmos are annuals, completing their life cycle in a single season. The most popular species, Cosmos bipinnatus (which is what Fizzy Purple is), is grown from seed each year and offers a wide range of colours, shapes and sizes. Frost will kill the plants, but they can sometimes self‑seed, meaning new seedlings may appear the following spring in the same spot.

Do Cosmos like sun or shade?

Cosmos thrive in full sun. They prefer fresh, peat‑free compost that is free‑draining but not overly dry. For the best display, feed with a liquid fertiliser several times during the growing season to encourage abundant blooms.