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.
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.
Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above.
Despatch: Within 24 hours applies to orders placed online from Sunday to Thursday. Orders placed online on Friday or Saturday will be despatched on Monday. Please note that for Bank Holiday weekends, orders placed Friday to Sunday will be despatched on Tuesday.
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 P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.
Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.
Cracking plants, but there's a catch
By Peter Rolfe 23-03-2017
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
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 email@example.com, one of our agents will be more than happy to look in to this further for you.
By Yoshiko Harrop 27-10-2016
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!
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 firstname.lastname@example.org, one of our agents will be more than happy to help regarding the germination rate.
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