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Egeria densa (Large-flowered waterweed)

Other names: Brazilian pondweed, Anacharis densa, Elodea densa, Brazilian elodea, Planchon, American frog's bit, Leafy elodea

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Species
E. densa is a tender to half-hardy, submerged, sometimes floating, evergreen, aquatic perennial with branched stems bearing whorls of sharp-pointed, linear, bright green leaves and, in summer, small, white flowers blooming within tubular, translucent spathes.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.2 m 5 m 5-10 years
0 ft 16 ft 5-10 years

Where to grow

Soil type
  • Loamy
Soil drainage
  • Pond/In water
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • East
  • West
  • South
Exposure
  • Exposed
  • Sheltered

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Additional plant details

Cultivation

In aquariums, grow in full light in a sandy medium at 5-18C (41-64F). In ponds in frost-free areas, grow in full sun in water 30-90cm deep. Plant in the bottom of the pond or in baskets filled with loam-based compost. Plants will not survive below 3C (37F). Plant with caution as it is invasive. Classified as an invasive species in many introduced areas.

Suggested uses

Aquatic

UK hardiness

H2

USDA zones

Zone 9, Zone 10

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Semi-evergreen

Habit

Spreading

Native to

South America

Drought tolerant

No

Flood tolerant

No

Toxicity

Sap from freshly trimmed plants can be poisonous to young fish.

Plant care

Pruning

Trim regularly to encourage fresh, new growth.

Propagation methods

Stem tip cuttings

Propagation

Float stem cutting just under the water surface until roots develop. Plant rooted cuttings in baskets or in the bottom of ponds.

Pests

Generally pest free

Diseases

Generally disease free

Take softwood cuttings

Planting aquatic plants baskets with heavy loam soil

Plant container grown plants in a sunny postion

Control invasive aquatic plants

Other plants

Plants in this Genus (1)

Egeria

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Egeria densa
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Egeria densa Large-flowered waterweed
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