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There is however one serious pest you have to contend with: molluscs. Slugs and snails are capable of decimating the leaves, leading to poor yields. All the humane remedies mentioned in books are, in my experience, ineffective. Fortunately, I have worked out a trick for repelling them. As far as I can tell, it is not mentioned anywhere on the web.
A person who worked with us on an intern basis, being willing to do useful work where required, could acquire this trick, among others.