Encyclopaedia
PlantFreshwaterEasy
©AI Generated·Proprietary
Heteranthera dubia
Heteranthera dubia
Heteranthera dubia: a robust, very fast-growing stem plant for the midground or background. Develops translucent light green leaves and small yellow flowers.
Class:Liliopsida
Order:Commelinales
Family:Pontederiaceae
Genus:Heteranthera
Species:Heteranthera dubia
Formerly known as:
Share
Check out Heteranthera dubia on Atlarium
Water Temperature
5 - 30 °C
pH Value
5 - 9
Water type
Freshwater
Light
Medium - High
CO2
Low
Expected height
100 cm
Expected width
20 cm
GH
2 - 15 dGH
KH
3 - 30 dKH
Species description
Geographical Origin and Habitat: Heteranthera dubia, commonly known as Water Stargrass, is native to North America, widely distributed from the United States to Mexico and southern Canada. It inhabits a wide range of freshwater habitats, including lakes, calm ponds, irrigation canals, and slow-moving rivers, growing both submerged and emersed on wet muddy banks.
Taxonomy & Genetics: It belongs to the Pontederiaceae family and is closely related to the genus Eichhornia. It is a highly adaptable plant showing notable leaf polymorphism: the submerged form has thin, ribbon-like leaves, while the emersed form develops shorter stems, thicker leaves, and small star-shaped yellow flowers.
Physical Structure: It features flexible, branched, and elongated stems that can easily exceed one meter in length in the aquarium. The submerged leaves are alternate, sessile, without petioles, linear-lanceolate in shape with parallel veins. The root system is fibrous and efficient at colonizing clay or sandy soils.
Color & Texture: Submerged leaves have a fresh, bright light green color with a slightly translucent texture that catches light. The fine, elongated texture adds a sense of movement and lightness to the aquascape, swaying elegantly with the movement of the water.
Care, breeding and tankmates
Lighting & CO2: Prefers moderate to intense lighting to prevent lower stems from losing leaves. CO2 injection is recommended to support its exceptionally fast growth rate, although it grows decently without it.
Nutrition & Substrate: It is a hardy plant that absorbs nutrients from both the substrate and the
Water Chemistry: Shows extraordinary chemical tolerance: tolerates pH from 5.0 to 9.0, KH from 3 to 30, and temperatures from 5 to 30 °C. It prefers alkaline and moderately hard water, making it suitable even for cichlid aquariums.
Space Management & Placement: Suited for the midground or background. Given its extremely fast growth, it can quickly invade the surrounding space, so it should be placed behind more stable plants and pruned regularly to avoid shading other species.
Pruning: Pruning is done by cutting the main stems to the desired height. The removed tops can be replanted directly to form new bushes, while the mother plant will quickly produce new lateral shoots from the nodes.
Risks & Diseases: The main risk is associated with its growth rate: if not pruned frequently, it reaches the water surface, forming dense floating carpets that block light to the plants below. It is a highly pest-resistant plant.
Geographic Origin and Distribution
Heteranthera dubia, commonly known as Water Stargrass, is native to North America, widely distributed from the United States to Mexico and southern Canada. It inhabits a wide range of freshwater habitats, including lakes, calm ponds, irrigation canals, and slow-moving rivers, growing both submerged and emersed on wet muddy banks.
Origin
North America
Plant profile
- Placement
- No verified data available
- Botanical form
- No verified data available
- Growth
- No verified data available
- Substrate
- No verified data available
- Column fertilization
- No verified data available
- Root fertilization
- No verified data available
- Trimming
- No verified data available
- Propagation
- No verified data available
- Nutrients
- No verified data available
- Sensitivity
- No verified data available
- Layout role
- No verified data available
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Recommendations grouped by close relatives, companion choices, and similar care.
