Stratiotes aloides
Stratiotes aloides · Hydrocharitaceae
A charming floating aquatic plant with elegant rosette-shaped leaves, the water soldier brings a natural, sculptural quality to still ponds and water gardens. Its delicate summer flowers and fascinating floating habit make it an excellent choice for creating a naturalistic aquatic ecosystem.
The gardener's calendar
Ideal time to plant stratiotes aloides: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Hydrocharitaceae
- Type
- Floating aquatic plant
- Foliage
- Deciduous, disappears in winter
- Flowering
- Summer (June to August)
- Size
- 30 to 50 cm diameter at surface
- Growth
- Fast in soft, stagnant waters
- Hardiness
- Hardy, tolerates light frosts
- Origin
- Central and eastern Europe
Care
Aquatic Environment
The water soldier thrives in soft, stagnant or very slow-moving water. Immerse young plants or let them float freely at the surface. Prefer a water depth of 30 to 60 cm. Avoid flowing water that sweeps them away and water that's too warm, which promotes eutrophication.
Light and Location
Install the plant in full sun or partial shade for optimal growth. It tolerates shaded areas but grows more slowly. Choose a calm pond, protected from wind and waves.
Substrate and Anchoring
Although floating, it develops roots that appreciate a muddy, nutrient-rich substrate at the bottom of the pond. A container or growing basket filled with heavy potting soil or silt encourages establishment. Water should be slightly acidic to neutral.
Fertilization
In water naturally rich in nutrients, no fertilizer is needed. In a poor or artificially maintained pond, a moderate application of balanced fertilizer in spring can stimulate growth. Avoid excess, which causes algal proliferation.
Pruning and Control
Regularly remove dead or damaged leaves to maintain pond balance. Divide rosettes in late summer or autumn to rejuvenate the colony and control expansion. Remove excess plants to prevent smothering other species.
Diseases and Pests
The water soldier is relatively resistant to disease in healthy pond conditions. Excess nutrients promote algae and can suffocate the plant. Occasionally inspect for harmful aquatic insects (dipteran larvae). Regular pond cleaning prevents most problems.
Did you know?
The water soldier was once used in Poland and Russia as a natural sponge to clean kitchen utensils: its fibrous and porous structure made it ideal once dried. Its scientific name Stratiotes means 'soldier' in Greek, because its stiff, pointed leaves resemble an armed phalanx floating at the water's surface.
Where to buy it
Best planted in spring or autumn, away from frost and heatwaves. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September, October.
Add this plant to my garden →Plants from the same family
- Halophila decipiensHalophila decipiens
- Halophila spinulosaHalophila spinulosa
- Canadian waterweedElodea canadensis
- Halophila tricostataHalophila tricostata
- Halophila capricorniHalophila capricorni
- FrogbitHydrocharis morsus-ranae
Tips generated and checked by Viridia — adapt them to your local climate.