I have a walk-in plastic tent thingy - lots of tent pegs and a guyline at each corner have held it well so far. Until someone went over the guylines with the mower...

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You are a child of the universe,
no less than the trees and the stars;
you have a right to be here.
Max Ehrmann, Desiderata

blog: http://allyheebiejeebie.blogspot.com/ and my (basic!) page: http://www.allythegardener.co.uk/