Toxic plants in alphabetical order. A pick up and put down book to dip into occassionally I thought , which is what I did to start with up to the letter D and then I read it continnually until finished . A great source of informative information about toxic plants , some of which came as a surprise , very useful for all gardeners to read.
The Poison Garden at Alnwick is well worth a visit , we did in the Summer of this year , the guide that took our group around the garden was very knowledgeable.