Jussiaea grandiflora
This plant is listed as an invasive non-native species in the UK – see Cultivation section for details. A perennial aquatic plant with creeping stems that form dense mats over wet ground or float on the water surface. Bright yellow flowers are followed by cylindrical seed capsules
This plant is listed on Schedule 9 of the Wildlife & Countryside Act (1981), the GB Non-Native Species Secretariat list of Species of Special Concern and the EU list of Invasive Alien Species of Union Concern (applies in NI). It should not be planted or caused to grow in the wild in the UK. It is also banned from sale, and gardeners who already have it should take steps to control it. See RHS advice on invasive non-native species for further information
See cultivation notes
See cultivation notes
See cultivation notes