Hygrophila lacustris Care Guide
Hygrophila lacustris (a synonym of Hygrophila costata, Acanthaceae) is a Neotropical stem plant with pale green leaves tolerating a wide range of conditions.
Overview
Hygrophila lacustris is an aquatic stem plant of the family Acanthaceae. It is treated as a synonym of Hygrophila costata, a highly variable species. It bears pale green, lance-shaped leaves and tolerates cooler temperatures and a wide range of water conditions, and is cultivated as a freshwater aquarium plant.
Taxonomy
- Family: Acanthaceae
- Genus: Hygrophila
- Scientific name: Hygrophila lacustris
- Synonym: Hygrophila costata
Habitat
The species is native to the Neotropics, ranging from the southern United States (including Florida) through the Caribbean, Mexico and Central America into southern South America. It grows in aquatic habitats and, through use as an aquarium plant, has become invasive in some regions such as Australia. White flowers distinguish it from its Asian relatives.
Aquarium requirements
- Temperature: 18-28 °C (64-82 °F)
- pH: 6.0-8.0
- GH: 3-16 °dGH
- Lighting: medium to high
- CO2: not required (beneficial)
- Maximum height: up to about 40 cm
- Placement: background
Growth and care
This is a fast-growing stem plant that adapts to a broad range of conditions, including cooler water than many tropical Hygrophila tolerate. Its leaf form is variable. Regular trimming keeps the stand neat and encourages branching.
Propagation
Propagation is by cuttings; the plant can also reproduce by seed. Cut shoot tips replanted into the substrate root and continue to grow.