AGM Probably a hybrid of I. pseudacorus this makes dense clumps of foliage to 80cm. Several pale yellow flowers with dense, very fine, brown netting are produced per stem in late spring. A good doer and quick to settle in any reasonable soil in sun. 1.2m. (2L pots)
Closely related to I. sibirica this species makes tidy clumps of narrow, upright leaves and slender, strong stems topped with deep violet-purple flowers in summer. For good to moist soil in sun. 60cm. (1.4L pots)