# Canadian Fleabane essential oil

> A fresh, herbaceous single oil steam-distilled from Erigeron canadensis, valued for its bright, energizing aromatic character.

Canonical page: https://essential-oils.club/oils/single/canadian-fleabane

Type: Single oil

## At a glance

- **Botanical name:** Erigeron canadensis
- **Plant part:** Flowering plant
- **Extraction:** Steam-distilled
- **Aroma:** Fresh, green, citrusy
- **Origin:** North America
- **Blends with:** Lemon, orange, herbaceous oils

## Composition

- Limonene: 62%
- trans-α-Bergamotene: 6%
- (Z)-β-Ocimene: 5%
- Matricaria ester: 4%
- γ-Curcumene: 4%
- β-Pinene: 4%

Source: JEOR study on the essential oil of Conyza canadensis (2000) (https://doi.org/10.1080/10412905.2000.9712214)

## Key constituents

- **Limonene** — Contributes the oil's fresh, citrusy-green facet

## How to use it

- **In the diffuser:** 3–5 drops alone, or with lemon or orange for a bright, energizing morning atmosphere.
- **On skin:** Dilute in a carrier oil and patch-test first — it has a less established topical-use history.

## Safety

- For topical use, dilute in a carrier oil, patch-test first, and keep out of reach of children.
- Maximum dermal use: Dilute in a carrier oil for skin.
- A gentle oil; dilute before topical use. Store cool and sealed, as its high limonene oxidises over time.
- Not phototoxic. Keep out of reach of children.

## What the research says

- Canadian fleabane oil has been characterised chemically and studied for antimicrobial activity in the laboratory. Its traditional uses are preliminary and not clinically established. — JEOR study (2000) (https://doi.org/10.1080/10412905.2000.9712214)

## Evidence

- Canadian fleabane (Conyza/Erigeron canadensis) is a limonene-dominant oil, with a small matricaria-ester fraction contributing to its fresh, green character. — JEOR study (2000) (https://doi.org/10.1080/10412905.2000.9712214)

## Frequently asked questions

### What is Canadian fleabane?

It's the oil of Conyza canadensis (also called Erigeron canadensis), a common North American plant. The distilled oil is limonene-rich with a fresh, green, slightly grassy aroma, used mainly in blends.

### Does Canadian fleabane oil oxidise?

Yes — because it's high in limonene, it oxidises over time like citrus oils, and oxidised oil is more likely to irritate. Store it cool, sealed, and out of light.

### Is Canadian fleabane phototoxic?

No — despite being limonene-rich, it isn't a cold-pressed citrus oil and isn't considered phototoxic. Dilute it for skin use as usual.

_Educational reference only — not medical advice. Essential oils are not intended to diagnose, treat, cure or prevent any disease._