Western waterweed (Elodea nuttallii)
Care, watering, light and tips for Western waterweed on Floravia.
Quick facts
- Family: Hydrocharitaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Western waterweed
Elodea nuttallii, also known as "smal vasspest" or Nuttall's Waterweed, is a fast-growing submerged aquatic plant native to North America. It features slender, branching stems with small, bright green lanceolate leaves arranged in tight whorls. It is ideal for freshwater aquariums and ponds, where it helps oxygenate the water and provides shelter for aquatic fauna.
Native range
North America
Care tips
This plant thrives in medium to high light, which promotes dense and healthy growth; insufficient light can lead to leggy development. It does not require a specialized substrate, as it can float or be gently anchored to the bottom. It prefers cool, clear water, tolerating a wide pH range. Avoid sudden changes in water chemistry, as this can stress the plant and cause its leaves to shed.
How to save a dying Western waterweed
- Warning signs
- Soft, translucent stems, leaves detaching or rotting.
- First aid
- Remove rotten parts, improve water quality and lighting.
- What kills it
- Lack of light, dirty or algae-filled water, sudden temperature changes.
- Can it be saved?
- Yes, if healthy stems remain, it can regrow with proper conditions.