About
This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive, non-native species and is banned from sale. See cultivation notes for further details An aquatic perennial with branched, submerged stems clothed in whorls of feathery leaves forming a mat on the surface, and with some erect stems to about 15cm.
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
Growing conditions
SunlightFull sun
Soil typeLoam
Soil pHAcid, Alkaline, Neutral
Soil moisturePoorly-drained
AspectSouth-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH4
Plant details
Plant typeAquatic
HabitSubmerged
FoliageDeciduous
HeightUp to 10 cm
Spread1-1.5 metres
Time to full height5-10 years
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. Spreads by root or stem fragments; all plants in UK are female
Pest resistanceGenerally trouble-free. Monitor for slugs and aphids.
Disease resistanceGenerally disease-resistant. Ensure good air circulation.