Its common name is sapphire tower, and the inflorescence is a pyramidal spire of teal-blue flowers up to 3m high. Though heart-stoppingly dramatic, and more climate-tolerant than the blue poppy ...

Catherine Cutler, the Eden Project's head of horticulture, said the masquerade variety features iridescent teal-blue flowers which were an uncommon colour in horticulture and were "highly sought".

The masquerade variety has unusual iridescent teal-blue coloured flowers Catherine Cutler, the Eden Project's head of horticulture, said the masquerade variety features iridescent teal-blue ...