Duckweed
Lemna minor
aquaticDuckweed is a tiny, fast-growing floating plant with small round fronds that reproduce rapidly in nutrient-rich water. It is an excellent natural water filter and oxygenator, making it ideal for aquariums and water gardens. This plant is so vigorous that it can quickly overtake a pond if left unchecked.
Common Problems
Select the problem your Duckweed is experiencing to get a treatment guide.
Care Guide
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Light
Requires moderate to bright indirect light; 8–10 hours daily. Tolerates low light but grows slower.
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Water
Maintain water temperature between 60–75°F (15–24°C). Prefers still or gently moving water; very adaptable to various conditions.
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Soil
No soil required; floats freely. Derives all nutrients from water column.
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Fertiliser
Minimal fertilizer needed; thrives in nutrient-rich water. Add liquid fertilizer monthly if water lacks nutrients.
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Temperature
Hardy in 50–75°F (10–24°C) range. Survives short cold periods but prefers warmer water.
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Humidity
Requires high humidity and wet conditions. Grows best in fully submerged or floating environments.
Toxicity
check_circleSafe for Catscheck_circleSafe for Dogscheck_circleSafe for Children
Non-toxic to humans and pets. Edible and sometimes used as livestock feed.
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.