Plantaginaceae
Shoreweed: Ground Cover Plant
Littorella uniflora
Shoreweed thrives in cool, soft, acidic water with moderate to high light. It grows slowly, forming compact rosettes that spread via stolons. Keep the crown above the substrate to prevent rot. Weekly water changes of 20–30% and optional CO2 supplementation encourage healthy growth.
Every 7-10 days
Partial shade
4° - 26°C
% - %
Categories
What is Shoreweed?
Shoreweed (Littorella uniflora) is a medium-care plant from the Plantaginaceae family. Littorella uniflora, commonly known as shoreweed, is a small aquatic perennial plant native to the shores of nutrient-poor freshwater lakes across Northwestern Europe. It forms dense, grass-like carpets on sandy or gravelly substrates and is popular in aquascaping for its fine-textured, low-growing...
Shoreweed grows up to 10cm, 4°C – 26°C. It is suitable for indoor environments and safe for pets.
Unlike many popular species, Shoreweed is safe to keep around pets.
How to Care for Shoreweed?
TLDR: Shoreweed needs Partial shade, watering every 7 days, and temperatures between 4-26°C with 40-70% humidity.
How Often Should You Water Shoreweed?
As a fully aquatic plant, shoreweed does not require traditional watering schedules. Instead, maintain consistent water quality with weekly 20–30% water changes. It absorbs nutrients directly from the water column and substrate.
How Much Light Does Shoreweed Need?
Provide moderate to high light (3,000–10,000 lux) for compact, healthy growth. Under low light, growth slows further and plants may etiolate. Natural daylight cycles of 8–10 hours are recommended.
What Is the Best Soil for Shoreweed?
Plant in fine sand or nutrient-poor aquatic substrate. Avoid burying the crown — only the roots should be anchored in the substrate. Sandy, well-aerated substrate promotes strong root development and prevents crown rot.
Care Schedule
Fertilize
Every 7 days
What Is Shoreweed and Where Does It Come From?
Littorella uniflora, commonly known as shoreweed, is a small aquatic perennial plant native to the shores of nutrient-poor freshwater lakes across Northwestern Europe. It forms dense, grass-like carpets on sandy or gravelly substrates and is popular in aquascaping for its fine-textured, low-growing foreground coverage. This dioecious plant produces inconspicuous white flowers when grown emersed in summer.
How Big Does Shoreweed Grow?
TLDR: Shoreweed can reach up to 10cm tall with Slow growth rate.
Max height
10cm
Growth rate
Slow
Foliage
Evergreen
Plant Uses
Ornamental
Great for decoration
Ground Cover
Soil coverage
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Shoreweed?
TLDR: Shoreweed is susceptible to 2 known diseases. Monitor regularly for early detection.
Crown Rot
Crown rot is a serious fungal disease that attacks the crown (base) of the plant where the stem meets the soil. It is caused by various fungal pathogens including Phytophthora, Fusarium, and Rhizoctonia. The disease thrives in waterlogged conditions and can quickly spread to kill the entire plant if not addressed promptly.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Fun Facts
Littorella uniflora is one of the few aquatic plants that can perform CAM photosynthesis, allowing it to absorb CO2 through its roots in low-carbon environments.
It is a protected species in several European countries due to the decline of its oligotrophic lake habitat.
The plant is dioecious, meaning individual plants are either male or female — male plants produce a single flower on a long stalk while female flowers remain sessile at the leaf base.
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Dark Fieldcap | Medium | Low light | 2d | ⚠️ |
| Azalea | Medium | Partial shade | 3d | ⚠️ |
| Muriel's Bamboo | Medium | Partial shade | 3d | ✓ |
| Bougainvillea | Medium | Direct sun | 7d | ⚠️ |
Choose & Compare
Sources & References
- Care Guide: Littorella Uniflora – HYGRONATURE
- Littorella uniflora – Wikipedia
- Littorella uniflora – Flowgrow Aquatic Plant Database
- American Shoreweed (Littorella Uniflora) Care Guide – Plantiary
- Littorella uniflora – Aquasabi
- Littorella uniflora – Tropica Aquarium Plants
- Littorella uniflora – Plants of the World Online, Kew Science
