Aldrovanda vesiculosa
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Aldrovanda vesiculosa

Waterwheel plant · Common Aldrovanda · Waterwheel · Bladderwort · Water bugtrap

Tier 2 Difficulty: hard Water: high Light: full_sun
Temperature
15–35 °C
Soil pH
5–6
Hardiness
Zone 7–10
Click count
14
Observations
22

Description

Source: leafsnap

Aldrovanda vesiculosa, commonly known as the waterwheel plant, is the sole extant species in the flowering plant genus Aldrovanda of the family Droseraceae. The plant captures small aquatic invertebrates using traps similar to those of the Venus flytrap. The traps are arranged in whorls around a central, free-floating stem, giving rise to the common name. This is one of the few plant species capable of rapid movement. While the genus Aldrovanda is now monotypic, up to 19 extinct species are known in the fossil record. While the species displays a degree of morphological plasticity between populations, A. vesiculosa possesses a very low genetic diversity across its entire range.A. vesiculosa has declined over the last century to only 50 confirmed extant populations worldwide. These are spread across Europe, Africa, Asia, and Australia. However, potentially invasive populations exist in the eastern United States. It is kept by hobbyists.

Care Guide

💧 Water

The waterwheel plant thrives in high humidity and consistently moist conditions, and it prefers to be watered twice a week. It grows best outdoors on calm freshwater surfaces. Its growth is influenced by the water temperature, which affects both photosynthesis and its ability to capture prey.

☀️ Light Full sun

The waterwheel plant is native to areas with abundant sunlight, like open bogs and sunny wetlands. It prefers full sun but can also tolerate partial sun.

Ideal: Full sun
🌡️ Temperature 15–35°C

For the Waterwheel plant, moderate temperatures are preferred, much like what people normally find comfortable. It does best in conditions that are neither overly hot nor overly cold. The main problem with high heat is the chance of sunburn, so in summer it's wise to provide some shade to avoid excessive temperatures. When temperatures fall, the Waterwheel plant goes dormant. If you want it to keep growing year-round, you need to keep warmer temperatures through the winter. Frost can harm the plant and should be avoided.

Ideal temperature: 15–35°C
💨 Humidity
Humidity:
🪴 Soil 5-6
Soil pH: 5-6
🌱 Fertilizer
🪴 Pot & Repot 2-3 years

When repotting the Waterwheel plant, select a pot 1-2 inches (2.5-5.1 cm) larger with good drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly lower than the rim of the flower pot. Water thoroughly after repotting and place it in a warm spot with indirect sunlight.

Suggested frequency: 2-3 years
✂️ Pruning

The waterwheel plant is an aquatic carnivorous plant known for its whorled leaves and snap-trap mechanisms. To encourage growth and maintain plant health, prune it from early to late spring. Pruning helps remove dead traps and prevents overcrowding, ensuring optimal light and nutrient access. Always use sterilized tools to avoid infection, and refer to reputable horticultural guides for detailed instructions.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Aldrovanda
Family
Droseraceae
Hardiness Zone
7-10
Mature Height
5 cm to 15 cm
Mature Spread
5 cm to 10 cm
Leaf Color
Light Green
Leaf Type
Deciduous
Flower Color
White
Flower Size
0.51 cm to 0.76 cm
Bloom Time
Summer
Planting Time
Spring
Harvest Time
Late summer, Early fall, Mid fall
Native Area
India, Austria, Slovakia, Rwanda, Croatia, Belarus, Tanzania, Uzbekistan, Russia, Germany, Cambodia, Cameroon, Burundi, Koppen, Ghana, Ethiopia, Romania, Moldova, Botswana, Netherlands, France, Czech Republic, Zambia, Sudan, Bulgaria, Poland, Bangladesh, Greece, Ukraine, Serbia, Chad, Lithuania, China, Italy, Kazakhstan, Japan, Hungary

Tags (5)

Common Names (5)

en Waterwheel plant
en Common Aldrovanda
en Waterwheel
en Bladderwort
en Water bugtrap