Geoff Lawton (born 10 December 1954) is a British-born Australian permaculture consultant, designer, teacher and speaker. Since 1995 he has specialised in permaculture education, design, implementation, system establishment, administration and community development.
Brad Stewart Lancaster (born 1967) is an expert in the field of rainwater harvesting and water management. He is also a permaculture teacher, designer, consultant and co-founder of Desert Harvesters, a non-profit organization.
Lancaster lives on an eighth of an acre in downtown Tucson, Arizona, where rainfall is less than 12 inches (300 mm) per annum. In such arid conditions, Lancaster consistently models that catching over 100,000 US gallons (380,000 l; 83,000 imp gal) of rainwater to feed food-bearing shade trees, abundant gardens, and a thriving landscape is a much more viable option than the municipal system of directing it into storm drains and sewer systems.
Josef "Sepp" Holzer (born July 24, 1942 in Ramingstein, State of Salzburg, Austria) is a farmer, an author, and an international consultant for natural agriculture. After an upbringing in a traditional Catholic rural family, he took over his parents' mountain farm business in 1962 and pioneered the use of ecological farming, or permaculture, techniques at high altitudes (1,100 to 1,500 meters (3,600 to 4,900 ft) after being unsuccessful with regular farming methods.
Holzer was called the "rebel farmer"[according to whom?] because he persisted, despite being fined and even threatened with prison for practices such as not pruning his fruit trees.
Bruce Charles "Bill" Mollison (4 May 1928 – 24 September 2016) was an Australian researcher, author, scientist, teacher and biologist. In 1981, he was awarded the Right Livelihood Award "for developing and promoting the theory and practice of permaculture".
He has been called the founder[n 1] and "father" of permaculture. Permaculture (a portmanteau of "permanent agriculture") is an integrated system of ecological and environmental design which Mollison co-developed with David Holmgren, and which they together envisioned as a perennial and sustainable form of agriculture. In 1974, Mollison began his collaboration with Holmgren, and in 1978 they published their book Permaculture One, which introduced this design system to the general public.
David Holmgren (born 1955) is an Australian environmental designer, ecological educator and writer. He is best known as one of the co-originators of the permaculture concept with Bill Mollison.