They have unlocked the secret to creating a blue carnation, and experimented with inserting a blue gene into gerberas and chrysanthemums.
Ladies receive a complimentary carnation when alighting.
The heir to the throne looked relaxed in a dark blue double-breasted suit with a white carnation in his lapel.
O'Brien, in a black suit with a white shirt and black tie, topped off with a yellow carnation, smiled broadly as he mingled with guests.
And what looks like an oversized red carnation in his lapel.