By Redkite
Gwynedd,
United Kingdom 
Hi. I really love Cosmos. Somebody told me to grow them from seed like an anual. But I have seen them sold in pots as a perennial. I would like some in my garden but not sure which type to get. Can anybody help?
29 Jun, 2012
Answers
They self seed alot in my area which has light,free draining soils
29 Jun, 2012
Thank you. I like the pink and white
so I'll get the anual ones
29 Jun, 2012
Iam a big lover of Cosmos too, where i live in Spain ( north),I collect the seed each october,then sow the seeds in febuary. We have terrible soil, thick clay, but it doesnt seem ti phase them a bit!
1 Jul, 2012
The annual Cosmos are, IMHO, the better as you get the light colours and light green leaves. The perennial one, Chocolate Cosmos, is heavier looking in both flower and leaf. You can almost leave it to come up every year. The annual Cosmos you need to collect the seed heads and sow them early every year. I have not had them self seed but am told that they do in drier sunnier summers!
29 Jun, 2012