A good buy, gives me good basic information on growing the different types of Iris but found that it is not uptodate with latest named varieties available from many of the nurseries. It would be better if the Ireses were listed in the index alphabetically irrespective of type/species because many Garden Centres only give basic information on their plant labels, eg Iris Imperial Magic - you then have to go through all of the different species to see if it is included in the book. This is a common fault of many similar books and other readers will probably argue that my suggested way of listing is not practical. Otherwise a very good book and very pleased with it, tells me what I wanted to know about growing Irises.