How Do Plants Make Music? The Science of Biosonification

The idea that a plant can make music sounds like a headline from a science fiction magazine. It isn't. It's a real, documented process called biosonification — and it's producing some of the most distinctive ambient music available today.

Here's how it actually works, without the hand-waving.

Plants Are Electrically Active

Start with the biology. Plants are not passive. Every moment, they're managing complex internal processes: moving water and nutrients through vascular tissue, opening and closing stomata in response to light, responding to touch, temperature, and stress. Many of these processes involve changes in electrical potential across cell membranes.

These bioelectrical signals are analogous in some ways to the electrical signals in animal nervous systems — though plants have no neurons and no brain. What they do have is a distributed signalling system. Action potentials (brief reversals of electrical charge across a membrane) have been recorded in plants since the 19th century.

The signals are real. They vary in response to the plant's environment. And they can be measured.

How the Measurement Works

A biosonification device — the most widely used today is PlantWave by Data Garden — attaches small electrodes or biofeedback probes to a plant's leaves or stem. These electrodes measure changes in bioelectrical resistance and surface potential, picking up fluctuations in the millivolt range.

The raw electrical data is fed into a signal processor. The processor applies a mapping algorithm: it translates the incoming electrical values onto musical parameters.

The mapping is where artistic judgment comes in:

• Pitch — a change in electrical potential maps to a higher or lower musical note
• Note duration — the rate of change determines how long a note holds
• Velocity — signal amplitude influences how loud each note sounds

The output is MIDI — the universal language of digital music. That MIDI stream can be routed to any synthesiser, sample library, or DAW to produce the final audio.

The Role of the Artist

Biosonification doesn't produce music automatically. It produces raw MIDI data. The artist's choices shape everything about what you ultimately hear:

• Synthesis — which sounds or instruments the MIDI is routed through
• Scale — whether notes are constrained to a particular musical scale (PlantWave defaults to pentatonic, which avoids dissonance)
• Tuning — many plant music artists use 432 Hz tuning rather than the standard 440 Hz, arguing that it produces a warmer, more organic result
• Production — layering, reverb, mastering, and arrangement

Artist Henotic has built a catalogue by recording extended biosonification sessions with various plants, then treating those recordings as raw material for production. The plant provides the note data; the artist shapes it into a finished piece.

What Affects the Output?

The plant's electrical activity isn't random — it responds to its environment. Different conditions produce different musical output:

• Light levels — a plant moving from shade to direct sun shows electrical activity changes
• Watering — a plant receiving water shows a measurable response
• Touch — some plants (notably Mimosa pudica) produce action potentials in response to being touched
• Presence — some practitioners report that plants respond differently when humans are in the room, though the mechanism is debated
• Species — different plant species produce different baseline electrical patterns

This means two recording sessions with the same plant on different days will produce different music. And two different species in identical conditions will sound distinct from each other.

The Devices Used

PlantWave is the market leader. It attaches two electrode clips to a plant's leaves and streams data via Bluetooth to an iOS or Android app. Output can be routed as audio or MIDI. It maps electrical variation to a pentatonic scale by default.

MIDI Sprout (also by Data Garden, the predecessor to PlantWave) works on the same principle. Many veteran plant music artists got their start with MIDI Sprout.

Music of the Plants devices come from the Damanhur community in Italy. They use proprietary electronics and emphasise meditation and spiritual contexts in their design philosophy.

Each device applies its own mapping algorithm, so the same plant run through different devices will produce different MIDI output — another variable the artist must account for.

Is This "Real" Music?

It depends what you mean by real. The source signals are real — they're actual bioelectrical measurements of a living plant. The mapping to music involves interpretation, so the music reflects both the plant's data and the artist's choices.

What it isn't is composed. No human decided which notes to play in which order. The sequence and timing emerge from the plant's biology in real time. That's genuinely novel as a compositional approach.

Whether that makes it art is a question you can answer by listening. RootNote features artists working exclusively in this space.

Ready to Hear Plant Music?

• Browse the artist directory — recordings and profiles of working biosonification artists
• License plant music for your project — commercial and personal tiers available
• Learn about 432 Hz tuning — the tuning system most plant music artists use and why

Plant music is not a gimmick. It's a genuine art form with a growing body of work behind it. The science is real, the artists are serious, and the music is worth hearing.

Related Articles

• What is Biosonification? How Plants Create Music — the accessible introduction to the field
• Plant Music Devices Compared: PlantWave, MIDI Sprout, and More — the hardware artists use and how they differ
• 432 Hz Tuning: The Science Behind Plant Music — why most plant music artists choose 432 Hz over standard tuning