Other common names
Jamaica water plantain, sky-blue pickerel weed, water orchid
This plant is listed as an invasive non-native species in the UK – see Cultivation section for details. A floating, aquatic perennial consisting of rosettes of rounded leaves, to 15cm long, with inflated, shiny, pale green leaf stalks. Long, purplish-green roots hang down into the water and may root into the mud at the bottom. Upright spikes of showy, pale blue to pale purple, funnel-shaped flowers, each 3cm across, are produced in summer