Water Stargrass (Heteranthera dubia) is an aquatic plant native to North America, thriving in slow-moving or still waters such as ponds, lakes, and streams. It features narrow, elongated leaves and small, star-shaped yellow flowers that bloom above the water surface. In agroecology and regenerative agriculture, Water Stargrass serves as a crucial component of aquatic ecosystems by providing habitat and food for aquatic wildlife, including fish and invertebrates. It enhances biodiversity and contributes to the ecological balance of water bodies. Historically, it has been used in constructed wetlands for water purification and nutrient cycling, stabilizing sediments, and reducing erosion along water edges. Its ability to thrive in nutrient-rich waters makes it ideal for phytoremediation projects, where it assists in removing excess nutrients and pollutants, thus improving water quality. In a food forest, it can be part of the aquatic layer, supporting the ecosystem by maintaining water health and providing habitat.
Growing Details
Water Stargrass thrives in full sun to partial shade in nutrient-rich, slow-moving or still waters. It prefers a muddy or silty substrate and can tolerate a range of water depths. Propagation is best achieved through division, as seed propagation is less common. To prepare the site, ensure the substrate is stable and rich in organic matter. Companion plants include other aquatic species like water lilies and cattails, which can help maintain water quality and provide additional habitat. Common m
The map shows known occurrence points of <strong>Heteranthera dubia</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Native to North America
applicable geo region: North America
language used: en
Flowering:
beginning
of Jun for 60 days
Harvest:
beginning
of August for 30 days
Seed Start:
?
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(0/5)
edible uses:
Medicinal Rating:
(0/5)
medicinal uses:
health concerns:
other uses: Used in constructed wetlands for water purification and nutrient cycling.
Scientific Literature
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Botanical data
specie: Heteranthera dubia
common names: Water Stargrass; Grassleaf Mudplantain
family: Pontederiaceae
sub family:
tribe:
sub tribe:
genus: Heteranthera
Growing Conditions
area needed: 0.0 m
spacing: 0.0 m
growing difficulty: Low
Deciduous / Evergreen: Deciduous
Seed Temp (Opt/Min/Max): 0ยฐC / 0ยฐC / 0ยฐC
Plant Temp (Opt/Min/Max): 0ยฐC / 0ยฐC / 0ยฐC
water demands: High
humidity:
light demands: High
root type: Shallow
frost tender: Medium
hardness:โโโโโโโโโโ(4/10)
first harvest: 0 years
life span: 0 years
succession: Mid
growth rate: Fast
max height: 1.0 m
max width: 0.5 m
soil preference:
Heavy
pH preference:
Neutral
flower type:
Hermaphrodite
growth details: Water Stargrass thrives in full sun to partial shade in nutrient-rich, slow-moving or still waters. It prefers a muddy or silty substrate and can tolerate a range of water depths. Propagation is best achieved through division, as seed propagation is less common. To prepare the site, ensure the substrate is stable and rich in organic matter. Companion plants include other aquatic species like water lilies and cattails, which can help maintain water quality and provide additional habitat. Common m
Potential Disturbances: Water Stargrass is generally pest-free but may occasionally be affected by aquatic snails or algae growth. To manage snails, introduce natural predators such as fish species that feed on snails. For algae control, consider using barley straw or introducing algae-eating fish. Avoid chemical treatments that can harm the aquatic ecosystem.
Growth Timeline
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