Top Quality Cosmos Seedlings for Sale

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Cosmos, Daydream Cosmea bipinnatus Daydream From £2.95

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Cosmos, Dazzler Cosmea bipinnatus Dazzler From £1.85

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Cosmos, Double Click Cranberries Cosmea bipinnatus Double Click Cranberries From £3.85

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Cosmos, Double Click Rose Bon Bon Cosmea bipinnatus Double Click Rose Bon Bon From £3.85

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Cosmos, Double Click Snow Puff Cosmea bipinnatus Double Click Snow Puff From £3.85

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Cosmos, Fizzy Rose Picotee Cosmea bipinnatus Fizzy Rose Picotee From £3.85

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Cosmos, Sensation Purity Cosmea bipinnatus Sensation Purity From £2.35

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Cosmos, Velouette Cosmea bipinnatus Velouette From £3.85

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Cosmos, A Cottage Garden Collection Mix of 2 or More Varieties From £9.96

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Cosmos, Antiquity Cosmea bipinnatus Antiquity From £2.50

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Cosmos, Candy Stripe Cosmea bipinnatus Candy Stripe From £2.50

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Cosmos, Sonata Carmine Cosmea bipinnatus Sonata Carmine From £2.50

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Cosmos, Sonata Pink Cosmea bipinnatus Sonata Pink From £2.50

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Cosmos, Sonata White Cosmea bipinnatus Sonata White From £2.50

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Cosmos, Xanthos Cosmea bipinnatus Xanthos From £2.50

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Right now, you can order seeds for Velouette, Double Click Rose Bon Bon, Double Click Snow Puff, Double Click Cranberries, Fizzy Rose Picotee, Dazzler, Daydream, and Sensation Purity.

Annual cosmos are extremely popular bedding plants and cutting flowers that bloom their socks off from May until Autumn, lasting for up to a week in a vase. They are easy to grow, ideal for containers, pretty much pest free, reaching 60-90cm tall.

We sell Cosmos seedlings in jumbo plugs. They arrive well-rooted, and ready for planting or potting.

Please note that annual plants are not covered by our guarantee, because they are not supposed to last that long!

Grown

Grown and lifted by our specialist plant growers

Picked

Picked by our team of experts from our Somerset nursery.

Packed

We’ve been packing and sending quality plants since 1949

Delivered

Packaged by our experts and sent out by next day delivery.

Learn more

FAQs

What are Cosmos?

Cosmos bipinnatus AKA Mexican Aster

Uses: Annual bedding & wonderful cutting flower
Plain and variegated pastel colours in white, pink & yellow
Flowering: May to September,
Position: Full sun with decent, moisture retentive soil
Growth: Up to 90cm
RHS Plants for Pollinators

Planting Cosmos

Plant so that the top of the plug is 1-2cm below the surrounding soil level, which will help to stop it drying out.
Space plants 25-35cm (8-14") apart: wider spacing will encourage sturdier, more wind-resistant stems.

In windy, exposed locations, a bed of cosmos benefits from a horizontal netting support stretched over them at about 30-40cm above the ground (or even two nets, one at 30cm and another at 60cm). It looks bad when you install it, but the Cosmos quickly grow through and hide the netting.
A small quantity of plants could be staked individually with bamboo canes.

Growing Cosmos

Cosmos like a well-worked bed with nothing special added, only a bit of compost, as they flower best on averagely fertile soil; rich soil will produce more leaves than flowers.

They need a lot of sun, and although fairly drought tolerant they still need water in dry spells to grow and to flower.

To help them bush out and produce as many flowers as possible, the tips should be pinched out when they are about 20-30cm tall.

Cut or deadhead the flowers promptly to extend the flowering period.

To maximise flower size and colour, feed lightly with a high potash and phosphate fertiliser during the growing season.

Buying Cosmos

Our Cosmos are sown under cover in early spring, into extra large & deep 6cm x 4cm plugs to allow a bigger rootball than is generally available.

• Cosmos are available as single plugs, but buying in packs of four gives you better quantity discounts.

Delivery is when the plants are ready and the weather permits, generally from the beginning of May onwards. We email you when your order is placed with an expected timeframe.

We grow our plants from the best quality seed, in peat-free compost with a slow release fertiliser.

Cosmos Plants & Seeds