The Monkshood (Aconitum × stoerkianum) is doing well this summer. It is one of those old flowers that have been grown up here in the north for a long time.
The bumblebees adore the flowers and there is constant buzz among the plants.
Monkshoods protect themselves with a cocktail of poison though. The whole plant is poisonous and a small dose of the root is enough to kill you. In other words not a suitable plant if you have small children playing in the garden.