Opium: A History

The Immortality Key: The Secret History of the Religion with No Name

The Light Eaters: How the Unseen World of Plant Intelligence Offers a New Understanding of Life on Earth

DMT: The Spirit Molecule: A Doctor's Revolutionary Research into the Biology of Near-Death and Mystical Experiences

Illusions: The Adventures of a Reluctant Messiah

MAKING DMT GUIDE: The essential guide to master the art of making DMT the spirit molecule at home in a simplified way

Native Plants of the Sydney Region: From Newcastle to Nowra and west to the Dividing Range

The Secret Life of Plants: A Fascinating Account of the Physical, Emotional, and Spiritual Relations Between Plants and Man

The Botany of Desire: A Plant's-Eye View of the World

Dropping Acid: A Beginner's Guide to the Responsible Use of LSD for Self-Discovery

The Joyous Cosmology: Adventures in the Chemistry of Consciousness

South African Indigenous Garden Plants: The Gardener's Guide

Plants and Empire: Colonial Bioprospecting in the Atlantic World

The Tree Almanac 2025: A Seasonal Guide to Understanding the Woodland World

Breaking Open the Head: A Psychedelic Journey into the Heart of Contemporary Shamanism

The Cannabible

The Book Of Peace

The Big, Bad Book of Botany: The World's Most Fascinating Flora

Decomposing The Shadow: Lessons From The Psilocybin Mushroom

Concise Mushroom Guide