Welcome to the companion website for Principles of Horticulture: Level 3. This website provides students with additional material which isn’t available in the book. Test your knowledge with our questions on a number of the book chapters and browse the Further Reading page for links to external websites. Instructors can access all of the images found in the book, slideshows which can be adapted for your own classroom use and a tutor guide which matches the learning outcomes with the book content.