Water lettuce

Pistia stratiotes

Family : Araceae

PlantFreshwaterfloating

Water lettuce is a floating plant with velvety rosette leaves. Very decorative and useful for shading the aquarium.

Water lettuce — photo 1 sur 4
Barry Hoggard from U.S.A. · Wikimedia Commons · CC BY-SA 2.01 / 4
Popularity
Easy plant
standard lighting, few requirements
Availability
Common in shops
Shop availability
IUCN Status
LC
Least Concern
Biotope
South America
Hors bassin amazonien : Paraná, Orénoque, Andes.

Description

Leaves are spoon-shaped, 5–15 cm, light green, covered with fine hairs making them hydrophobic. Roots are long and feathery, up to 30 cm. The plant reproduces via stolons, producing daughter rosettes. It absorbs nutrients effectively. Can become invasive in warm regions. In aquariums, it needs sufficient surface space.

Habitat

Region :

This floating plant grows in calm waters of tropical lakes, rivers, and marshes. It forms dense rosettes on the surface.

Distribution :

Recommended parameters

Temperature2230 °C
pH67.5
GH310 °dGH
KH26 °dKH
NO₃
≤ 20 mg/L
PO₄
≤ 0.5 mg/L

Care

Difficulty
1/5
Diet
Photosynthetic
Min. tank
30 L
Min. group
1
Adult size
15 cm
Lifespan
3 years
Temperament
Peaceful
Propagation
Division des stolons : séparer les rosettes filles.

Care notes

Temperature 22–30°C, pH 6.0–7.5, GH 3–10. Moderate to high lighting (0.5–0.8 W/L) is beneficial. No substrate. Avoid strong currents. Remove excess rosettes regularly. Roots provide shelter for fry. Beware of snails that may damage leaves. Can be used in outdoor ponds in summer.

Similar species

Espèces proches, même habitat ou même maintenance

References