Water
Keep soil consistently saturated or submerged. This plant thrives in shallow water or very wet ground, making it ideal for pond edges or bog gardens.
Also known as Common Flotegrass · Floating Manna Grass · Floating Mannagrass
Water Mannagrass (Glyceria fluitans) is a semi-aquatic perennial grass found in wet habitats across Europe and Asia.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers full sun to partial shade.
70% intensity
Can tolerate some shade but may grow less vigorously.
Keep soil consistently saturated or submerged.
100% intensity
Ideal for pond edges or bog gardens.
Prefers heavy, fertile, waterlogged soils such as clay or loam.
50% intensity
Thrives in moderate temperatures.
60% intensity
Tolerates a range from 15-25°C.
Outdoor, Aquatic
50% intensity
Generally not required in nutrient-rich soil.
20% intensity
Apply balanced liquid fertilizer sparingly if growth is weak.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep soil consistently saturated or submerged. This plant thrives in shallow water or very wet ground, making it ideal for pond edges or bog gardens.
Minimal pruning is required. Remove dead or damaged foliage as needed to maintain appearance. Cut back old growth in late winter or early spring before new growth emerges to encourage vigorous new shoots.
Easily propagated by division of clumps in spring or autumn. Seeds can also be sown in moist soil or shallow water in spring. It readily self-seeds in suitable conditions.
Not typically grown in pots, but if so, repot in spring when rootbound. Use a large container with heavy, waterlogged soil. Ensure adequate drainage holes are present if not fully submerged.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Water Mannagrass (Glyceria fluitans)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Poaceae |
| Genus | Glyceria |
| Species | Glyceria fluitans |
Similar in genus Glyceria
Answers based on plant encyclopedia data
