The AGtivist from Wicked Leeks
The AGtivist investigates the use of contaminated sewage sludge as fertiliser on UK farms The use of sewage sludge as farm fertiliser poses major environmental
Richard Higgins
27 February 2026
Joint Presentation
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In the IPC2015 – That’s the International Permaculture Convergence 2015 that will be held in London, a joint presentation will be made by Albert Bates, author of the Biochar Solution and Richard Higgins, author of the Lost Science of Organic Cultivation. Dates and venue to be confirmed.
Further reading
why WE don’t need to buy BIOSTIMULANTS or COVER CROPS
taken from the Wicked Leeks site The issue is that many biostimulants are increasingly being produced and sold by the globalised agrochemical companies who
Richard Higgins
21 February 2026
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