Speaking at Wimbledon Literary Festival with fellow garden designer Andrew Fisher-Tomlin, Wilson said: "Christopher Lloyd was most rude. He didn't want to be in the book." Wilson suggested it could have been because Lloyd was not singled out as a major player in the publication.
He added: "He was influential as a plantsman but less so as a designer. He filled spaces at Great Dixter that had already been created by Lutyens.
"He said he thought I wouldn't be able to write the book in the time I had available. I thought ‘that's up to me really.' The other 55 were delightful."
Wilson said if he was writing the book now he would include Tom Stuart-Smith but not Diarmuid Gavin, who he said "relies on the media".
He added: "TV garden design is not real gardening. It just has to work on TV. We have now got back to true gardening. No TV programme or gardening magazine tells you how much a garden costs — if it did people would stop buying the magazine. Hard landscaping is always expensive. Plants are always cheaper — people are not getting the big picture."
Wilson added that applications are up for Chelsea Flower Show 2010 and that more designers have their sponsorship in place than in previous years.
Subscribe to Horticulture Week for more news, more in-depth features and more technical and market info.