Do Trees Give Signals Before a Volcanic Eruption?

BY SANDHYA | 4 AUG 2025

Mysterious Tree Behavior

Can trees really sense when a volcano is about to erupt? Nature often gives silent clues. Let’s explore how trees might be part of that warning system.

The Science of Volcanic Signals

Volcanoes release gases, heat, and seismic waves before erupting. These can affect the ecosystem—including trees.

Root Zone Changes

Hot gases like carbon dioxide and sulfur dioxide can seep into the soil, harming tree roots and affecting growth patterns.

Unusual Leaf Shedding

Trees near volcanoes may shed leaves suddenly or show unusual color changes due to underground heat or gas exposure.

 Tree Ring Clues

Tree rings record environmental stress. Scientists can study rings to trace past volcanic events and early signs.

Sudden Wilting or Death

Increased soil temperature and gas saturation can cause sudden wilting, dieback, or even tree death near active volcanoes.

Movement Detected by Sensors

High-tech sensors placed on trees can detect subtle tilts or vibrations caused by volcanic tremors.

Real-Life Examples

Mount Pinatubo (1991) and Mount St. Helens (1980) showed strange plant behavior before eruptions were detected.