Yes. A new flower bud is flat button shaped. After they have flowered the seed head to be is pointed. At that point, cut off the old flower down to the next leaf joints. They will then branch to form two more. If you keep dead heading they should flower until the frosts.
Posts
They will flower first year even if you grow them from seed.
When you don't even know who's in the team
S.Yorkshire/Derbyshire border