Dahlia Hadrians Midnight.

Itching to add an apostrophe to that name but it hasn't got one on the label!  
This is from my favourite garden centre which specialises in dahlias.  As you can see from the extra, the ants love it too and use it to farm their black fly. I try to make this more difficult for them by remembering to water the pot and sweeping the stems with a gloved hand at regular intervals.  I'm not sure who is winning yet.  Hoping some ladybirds show up soon.