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My Plant Pot Water Smells Like Rotten Eggs

By Heath Robert
Rotting plant matter can make water smell like rotten eggs.
Ryan McVay/Photodisc/Getty Images

Decaying organic matter can cause water to develop a rotten-egg smell. This smell is caused by hydrogen sulfide, a by-product of organic decay. It's important to keep your plant base clean to prevent this smell from developing.

Causes of Hydrogen Sulfide

Decaying vegetation or chemical reactions with certain minerals can lead to a smell like rotten eggs. As water moves through potting soil, it comes into contact with these minerals or dead pieces of vegetation.

Hazards of Hydrogen Sulfide

Hydrogen sulfide is considered to be a hazardous gas. If you begin to notice the smell of rotten egg coming from your plant, open a window to vent the fumes. Even with low exposure to the gas, it can still irritate the eyes, nose, throat and respiratory system. If the smell persists or you exhibit symptoms, discard the plant immediately.

Removing the Smell

To remove the smell of hydrogen sulfide, it's important to keep the potting soil clear of dead leaves and other debris. Pick out leaves from the base of the plant at least once a week. You should also remove stagnant water in the base of the drip pan every day.


About the Author


Heath Robert has been a professional writer since 2001. Covering news, politics and local communities, he has worked for daily newspapers across Colorado, including the "Columbine Courier" and the "Colorado Statesman." Robert holds Bachelor of Arts degrees in journalism and political science.