Double Click Snow Puff Cosmos Plants

• Variety: Cosmos bipinnatus 'Double Click Snow Puff'
• Common name: Cosmos / Cosmea / Mexican Aster
• Type: Half-hardy annual
• Flower form: Double and semi-double
• Colour: Pure white, occasional soft pink blush
• Height: 90–120 cm (36–48 in)
• Flowering period: June–October
• Position: Full sun (minimum 6 hours)
• Soil: Well-drained, ordinary to poor fertility
• Spacing: 30 cm (12 in)
• Good for cutting: Yes – excellent
• Container suitable: Yes, with support in a large pot
• Sold as: Jumbo plug seedlings, hand-sown by us
• Plant outdoors: After last frost (mid-May in most areas)
• Delivered: Late April to May by next-day courier. Collection from Castle Cary also available

Double Click Snow Puff – White, Fluffy, and Made for the Vase

Snow Puff produces fluffy, ruffled double flowers in pure white, occasionally with the faintest blush of pink at the heart of a bloom. The petals are layered and slightly crumpled, giving each flower a snowball quality that is quite different from the clean, open daisies of a single white cosmos like Sensation Purity. It is one of the most popular cosmos at farmers' markets and flower stalls, and in a vase it has an ethereal, romantic character that single varieties cannot match. A few stems of Snow Puff in a glass jar on a kitchen table is one of the simplest and most effective arrangements you can put together from a garden.

At 90–120 cm, Snow Puff is a tall variety. The stems are long and straight, which is part of its value as a cut flower, but the height means it needs support in the border. Cosmos has a long history in British horticulture. Chocolate cosmos was introduced to cultivation in 1835 by William Thompson of Ipswich, who went on to found Thompson & Morgan, one of Britain's most famous seed companies. So the genus has a direct link to the origins of the UK seed trade. Snow Puff is a modern cultivar and a long way from those first Mexican imports, but it carries the same easy-going temperament that made the species popular in the first place.

Planting Partners for Cosmos Snow Puff

White flowers go with everything, but Snow Puff's double form means it pairs especially well with other doubles. Double Click Cranberries (deep cranberry-red) is the natural partner: same height, same form, maximum colour contrast. The two in a vase together have a quiet drama that is hard to improve on. Velouette (crimson-mahogany stripes, single) adds a graphic element if you want to mix forms as well as colours.

In a border, Snow Puff's white doubles glow against a background of dark-leaved shrubs or a hedge. Plant it in front of climbing roses like New Dawn or Compassion, with the cosmos flowering at the base while the roses climb above. Both flower from midsummer and the cosmos fills the gap at ground level that climbing roses inevitably leave.

Why Choose Ashridge Cosmos Plugs?

Every cosmos plug we sell is hand-sown and grown at our nursery in Somerset. We buy fresh seed each year because cosmos does not come true from saved seed. No contract growing, no outside suppliers. Your plants are hardened off before dispatch and arrive as sturdy jumbo plugs ready to plant.

Dispatch by next-day courier from late April. Our plant guarantee covers anything damaged in transit or that fails to establish. We are a small, family-run nursery. The people who answer the phone are the same ones who grew your plants.

Frequently Asked Questions

How tall does Cosmos Double Click Snow Puff grow?

Snow Puff reaches 90–120 cm (3–4 ft). It needs support, put in at planting time before the stems are tall enough to be damaged by wind. Horizontal netting at 30–40 cm works well for groups; individual canes for smaller plantings. For full growing advice, see our cosmos growing guide.

Is Cosmos Snow Puff good for cutting?

Snow Puff is a superb cut flower with a romantic, fluffy quality that single cosmos cannot offer. The stems are long and the flowers last 7–10 days in water. Cut in the morning, strip lower leaves, and give the stems a fresh cut before placing in clean water. A very few plants will give you buckets of flowers across the summer.

What is the difference between Snow Puff and Sensation Purity?

Both are white cosmos, but the flowers are quite different. Sensation Purity is a single, open daisy with flat petals. Snow Puff is a double with layered, ruffled petals that create a snowball effect. Purity is taller (up to 150 cm) and more traditional in appearance. Snow Puff is shorter, denser, and more romantic. In a vase, the difference is striking. Browse both in our cosmos collection.

Does Cosmos Snow Puff self-seed?

Cosmos can self-seed in mild areas with well-drained soil, but seedlings from double varieties like Snow Puff are unpredictable. Many revert to single flowers, and the colour may drift. If you want reliable doubles, start fresh with named plugs each spring rather than relying on self-sown plants.

What should I do with cosmos in autumn?

After the first frost blackens the foliage, cut the stems at ground level and compost the top growth. Leave the roots in the soil to break down over winter. Cosmos are annuals and will not come back. Clear the space and plan next year's display. If you grew Snow Puff in a container, just empty the pot onto the compost heap and wash it ready for autumn bulbs. For more container advice, see our guide to growing cosmos in pots.