Cosmos Plants for Sale

Cosmos Plants in the UK

Loved by people, bees, and butterflies alike, our annual cosmos plants are hugely popular, blooming their socks off from May to Autumn. Perfect for bedding and cutting, they last up to a week in a vase. Our jumbo plugs arrive well-rooted and ready for planting or potting straightaway. The best time to plant seedling cosmos is after the last frost, which is typically around mid-April to late May. Being relatively low maintenance and pest-free, cosmos plants are perfect for new gardeners who want a stress-free splash of colour in their summer gardens.

Buy Cosmos Plants Online

Our cosmos plug plants are expertly sown in the UK under cover in early spring and dispatched from our nursery to your door only when conditions are right:

• Seasonal dispatch – delivery generally starts from May, subject to weather conditions
• Typical lead time – most orders are processed and lifted within 2 weeks when in season and in stock
• Fast delivery – once dispatched, plants are delivered by next working day courier
• Order updates – we’ll keep you informed by email
• Friendly support – contact us for support and speak to our knowledgeable team by phone or message

Once you get your cosmos plugs, make sure to unpack, water, and either plant or place them in a sunny spot. If you can’t plant them right away, water them every 48 hours to keep them happy.

Please note that mail order annual plants are not covered by our one-year guarantee as it’s normal for them to not last beyond a year.

Choosing The Right Cosmos Flower Plant Seedling

Whether you’re looking for single colour cosmos, variegated varieties or a happy mix of both, we have a diverse collection of cosmos plugs to choose from.

• Single colour – Sensation Purity and Sonata White are some of our most popular white cosmos plants, or if you fancy yellow cosmos plants, the Xanthos is a fan favourite
• Variegated varieties – Daydream and Fizzy Rose offer soft pink and white combinations, but the Velouette is our pick for a bolder look
• Collections – We offer a mixture of varieties in our Cottage Garden Collection for adventurous gardeners who’d like a random riot of colours!

All of our cosmos are available as packs of 4 plugs or multipacks for even better value.

Why Choose Ashridge Nurseries Cosmos?


Expert Grown, Peat-Free Cosmos

Cultivated from the best quality cosmos seeds in the UK for healthy vibrant blooms

Growing & Supplying Since 1949

Decades of horticultural know-how behind every plant we supply

Hand Picked Quality

Carefully selected and packed to arrive in top condition by trusted couriers

Award-Winning Service

Recognised by Which? as Best Plant Supplier in 2025