By Helentiplady
United Kingdom 
Keeping Cosmos Flowering for Wedding: Hi, I have a garden full of Cosmos, Asters and Dahlias which are just coming into full bloom now which I am trying to keep in bloom until my wedding on 26th October. I keep cutting the flowers off as soon as the buds start opening (my house looks lovely right now!) but I wondered if anyone had any advice on whether I should cut back, is 4 weeks enough for good growth this time of year? I should I just keep as I am and cutting the flowers off? I would also like some advice on how many weeks/days I should stop cutting before to get as many blooms as possible. Here is hoping we dont get a major frost!! Many thanks, Helen x
25 Sep, 2013
Answers
This is what I have and still am doing at Glamis Castle Walled Garden dead head the cosmos.
They have been stunning this year.
25 Sep, 2013
If you think there will be a frost on any night before your big day, throw a fleece over them to keep the frost out. I hope all goes to plan and you have a lovely day.
25 Sep, 2013
Cosmos will flower until the first frosts if they are regularly dead headed.
I wouldn't cut them back.. just keep on dead heading as the flowers finish so they don't set seed and stop flowering
25 Sep, 2013