Himalayan blue poppy 'Dalemain'

'Dalemain' is a short-lived perennial about 1m tall, forming an upright rosette of long, oval, hairy leaves suffused with red-purple when young. In summer, erect, leafy stems bear a cluster of deep blue poppies, sometimes suffused with mauve or purple tones with contrasting yellow stamens. The seed capsules, covered in bristly hairs, are decorative but contain no viable seed