About
Myriophyllum heterophyllum (broadleaf watermilfoil) is a non-native invasive species listed on Schedule 9 of the UK Wildlife & Countryside Act. It is an offence to plant or cause this species to grow in the wild. It should not be purchased or cultivated.
About the genus
Myriophyllum can be submerged or marginal aquatic rhizomatous perennials, with finely dissected submerged leaves and small or minute flowers, solitary or in spikes from the leaf axils
Plant details
Suggested usesPonds, water features, bog gardens.
Care notes
CultivationThis plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive non-native species. Across the EU, UK and NI it is an offence to plant or cause to grow in the wild plants listed on Schedule 9 of this order. These plants should not be planted or caused to grow in the wild and in addition are banned from sale. Gardeners possessing them should undertake measures to control them. See RHS advice on invasive non-native species for further information
PruningMinimal pruning required. Remove dead or damaged growth as needed.
PropagationSee cultivation notes
Pest resistanceGenerally trouble-free. Monitor for slugs and aphids.
Disease resistanceGenerally disease-resistant. Ensure good air circulation.