Least duckweed (Lemna minuta)

Care, watering, light and tips for Least duckweed on Floravia.

Least duckweed

Quick facts

About Least duckweed

Lemna minuta, commonly known as least duckweed, is a tiny floating plant from the Araceae family, characterized by its minute oval green leaves that form a dense mat on the water's surface. It is ideal for ponds, freshwater aquariums, and stagnant water bodies, where it helps control algae and provides shelter for small organisms. Its rapid growth makes it perfect for quickly covering aquatic surfaces and adding a natural touch.

Native range

North America

Care tips

It requires bright light for optimal growth, but can tolerate medium light conditions; avoid intense direct sunlight that could scorch the leaves. It does not need substrate, as it floats freely, and benefits from nutrient-rich water. The biggest challenge is its rapid growth, so it is crucial to control its proliferation to prevent it from completely covering the water surface and depriving other aquatic plants of light.

How to save a dying Least duckweed

Warning signs
Discoloration (yellow/brown), drastic size reduction or disappearance.
First aid
Remove debris, improve ventilation if in a closed container. Ensure nutrients.
What kills it
Accumulation of decaying organic matter, lack of light or nutrients.
Can it be saved?
Yes, it's very resilient. Controlling the environment and removing damaged parts usually suffices.

Open in Floravia — reminders and AI advice