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Home>Flowers, Plants & Shrubs>Flower Seeds>Half-Hardy Annual Seeds

Cosmos bipinnatus 'Xanthos'

2 Options from £3.69

4 Reviews

A totally new cosmos that's already causing a big stir!

Unique cosmos colour

Compact and early flowering

Garden performance guaranteed

1 packet (20 cosmos seeds) £3.69 Despatch: within 24 hours
2 packets (60 cosmos seeds) £4.49 Despatch: within 24 hours
Description Sowing More Info Delivery Reviews Video

Unique soft-yellow blooms are produced in profusion on compact dwarf plants, bringing real impact to patio containers, beds and borders. This early flowering cosmos will start to bloom in as little as 70 days from sowing, going on to offer to six months of colour from May to October - keep on top of the deadheading and new flowers will just keep coming!

Use the classy blooms en masse for an elegant feel to your displays, if not, set them in combination with other annuals to complement pastel shades or calm hot colours. The stand-out flowers also make a great underplanting to shrubs and hedging. These compact cosmos plants are the perfect option for exposed gardens where taller varieties would be blown about by the wind. Height: 60cm (24"). Spread: 40cm (16").

Patio, Cottage Gardens, Cut Flower Garden


Full sun

60cm (23.6in)

40cm (15.7in)

1 Packet (20 Cosmos Seeds) (TT60107)
2 Packets (60 Cosmos Seeds) (TM64945P)

Sowing Months Flowering Months
When growing Cosmos plants, water regularly until they are fully established. Deadhead faded Cosmos flowers regularly to encourage more blooms to be produced throughout the summer.
Start off in a seed tray indoors and plant out in borders. Fill a seed tray with good, free-draining, damp, seed compost. Sow seed on the surface of the compost and cover with a very fine sprinkling of dry vermiculite or finely sieved compost. Place the seed and tray in a propagator or seal inside a polythene bag and keep at around 20-25C (68-77F) until the seeds germinate. This will take about 7-14 days. Don’t exclude light as this helps germination.

When the seedlings are large enough to handle, transplant them individually into 7.5cm (3") pots or multi-cell trays. Before planting out, acclimatise the plants to cooler conditions by putting them outside for a few hours a day for a few weeks. Plant out when all risk of frost has gone about 45cm (18") apart.


Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details and details of any surcharges that may apply to certain destinations.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.


Cracking plants, but there's a catch 2017-03-23

I grew them last year in a group of about 20. Stunning when they first come out and the flowers just keep coming and coming, but then you need to dead-head and that's where the problem lies. The new buds are mostly attached directly beneath the spent flower head making it near impossible to remove the dead head without removing the developing buds too. After a while the mass of dead heads that accumulates does look a bit unsightly, but still a fantastic initial display and I suppose you can get used to the dead heads. I am growing a few this year too

T&M replied on 2017-03-27: Thank you for your review. I am sorry to learn of your disappointment with your purchase. If you would like to contact our Customer Care Department at, one of our agents will be more than happy to look in to this further for you.

Recomended 2016-10-27

Every year I grow at least a couple of varieties of Cosmos. This one is truly to the description - very early flowering(found flower buds within 4 weeks of sowing), profusion of flowers(beautiful lemon yellow), branching well, flowers very long time if deadheaded, compact habit on dwarf plant(spread 40-50cm, height60cm), self supporting. The only reason I could not give 5 stars was germinating rate. Compared with others, it was not brilliant. I got 11 plants out of 30 seeds(half germinated but 4 were not good plants.) But once germinated, they were well worth growing, as they are very good permormers!

T&M replied on 2016-10-27: Thank you very much for taking the time to post a review. I am glad that you have been happy with the performance with the seeds that did germinate. If you could please contact our Customer Care Department at, one of our agents will be more than happy to help regarding the germination rate.

My new favourite Cosmos 2016-08-23

I've had great success with this new Cosmos. I did nothing special except I did pinch out the growing tip when they were 6 ins high. This produced a bushy plant with lots of lovely creamy buttery yellow flowers. Most of the seed germinated and I planted them with Coreopsis Incredible dwarf mixed for a nice contrast. I usually plant Cosmos Sonata but this new yellow variety of Cosmos is my new favourite as it looks good with roses and softens the look of the border as it is not too tall.

T&M replied on 2016-08-24: Thank you very much for your review. I am glad that you have been happy with your purchase. I hope we can continue to be of service to you in the future.

Nice colour but disappointed in plant 2016-08-19

I love Cosmos and grow many different varieties each year so I was looking forward to growing this new one. Maybe I didn't pay enough attention to the description but I didn't realise they were a lot shorter than the Cosmos I usually grow. As a result, I planted them in the wrong position towards the back of the border. The flowers are a nice colour but the plants themselves are not so self-supporting as other varieties. I won't grow them again.

T&M replied on 2016-08-21: Thank you for your review. I am very sorry to learn of your disappointment with your purchase. At your earliest convenience please contact our Customer Care Department at, one of our agents will be more than happy to look into this further for you.

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