Worcestershire,
United Kingdom 
How should I prune a cosmos
12 Sep, 2010
Answers
You may find seedlings sprouting up next spring though Guest if you've left the seedheads on. I grow mine with Rocket Larkspur and treat both the same....the self sets come up year after year..........
12 Sep, 2010
Cor !! I like the sound of that Janey.
12 Sep, 2010
:o))
12 Sep, 2010
Not necessary, by and large they're annuals in Britain, so it'll die over winter.
12 Sep, 2010