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Baldellia ranunculoides

Baldellia ranunculoides · Alismataceae

The gardener's calendar

The right move for September

Ideal time to plant baldellia ranunculoides: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Family
Alismataceae
Type
Herbaceous aquatic plant
Foliage
Deciduous
Flowering
June to September
Adult size
15 to 30 cm in height
Hardiness
Hardy, down to -10 °C
Origin
Western and central Europe
Natural habitat
Shallow waters, marshes and banks

Care

Watering and immersion

Baldellia ranunculoides is an aquatic plant that must be permanently submerged. Position it in shallow water, between 5 and 15 cm deep. It also tolerates constantly wet to very marshy soils. Ensure good water circulation to avoid complete stagnation and overly thick silt deposits.

Light exposure

This plant prefers direct sunlight or partial shade. It develops best with at least 4 to 6 hours of daily light. In very shaded conditions, flowering will be reduced and growth slowed. Install it in a bright area of a pond or along the edge where it receives direct rays for part of the day.

Substrate and soil

Baldellia ranunculoides grows in soil rich in organic matter, slightly silty or loamy. Adding planting soil or compost before installation promotes its establishment. The substrate must remain constantly wet to submerged; ordinary well-draining soil works if watering is regular.

Nutritional input

This aquatic plant benefits from moderate fertilizer application in spring, during the growing season restart. Prefer a diluted liquid fertilizer for aquatic plants, applied according to product recommendations. Excess fertilizer promotes algal proliferation; stay measured and respect dosages.

Pruning and maintenance

Regularly remove dead or yellowing leaves to maintain a nice shape and limit rot. After flowering, trim back faded stems slightly. This plant remains compact and doesn't require severe pruning; maintenance is limited to regular cleaning of senescent parts.

Health and problems

Baldellia ranunculoides is generally hardy. The main issues are rhizome rot from stagnant water or excessive winter moisture, and algae invasion in overly nutrient-rich water. Ensure minimal water circulation, limit fertilizer and remove decomposing organic debris to prevent problems.

Did you know?

Baldellia ranunculoides gets its common name from its resemblance to Ranunculaceae plants, although it belongs to the Alismataceae family. Historically, shallow water plants like this one served as food and medicinal resources in European riverside cultures, though their use is poorly documented today. Its natural habitat, temperate marshes, makes it a useful species for ecological restoration of wetland areas.

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.

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Tips generated and checked by Viridia — adapt them to your local climate.