Brazilian pondweed

Also known as: large-flowered waterweed

A vigorous aquatic perennial with branching stems to 90cm long, with whorls of fine, linear leaves all along the stems. Stems form dense mats on reaching the surface of the water. Small white flowers borne on thin stems are held just above the water in late spring, and sometimes again in autumn. Usually sold as an aquarium plant, can be invasive outside this environment

Scientific classification

Species: Brazilian pondweed (Egeria densa)
Genus: Egeria
Family: Hydrocharitaceae

Information to be completed
Toxicity: Aquatic
Plant type: 0.5-1 metres
Height: 0.5-1 metres
Spread: Deciduous
Foliage: Submerged · Matforming
Habit: Spring · Summer · Autumn
Season of interest: Full sun
Sunlight: Information to be completed
Ideal temperature

Brazilian pondweed pictures

Distribution of Brazilian pondweed

Distribution map

Southern USA, C and NS America

Information to be completed

Culture

Information to be completed

Toxicity

Information to be completed

Quick identification of Brazilian pondweed

Information to be completed

Brazilian pondweed care guide

Moderate regular watering, avoid prolonged drought or waterlogging
Watering: Full sun
Sunlight: Information to be completed
Ideal temperature

Watering

Moderate regular watering, avoid prolonged drought or waterlogging

Fertilizing

Balanced feed in spring and light repeat in growth season

Pruning

Trim regularly to encourage fresh growth

Propagation

See cultivation notes

Growing

This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act (Northern Ireland) as an invasive non-native species. Although not banned from sale, it is an offence to plant or cause these to grow in the wild IN NORTHERN IRELAND or the REPUBLIC OF IRELAND. Gardeners possessing them should undertake measures to control them. See RHS advice on invasive non-native species for further information

More growing and care information →