This is the best in Britain. Information is concise and accurate unlike some websites. You know that the plant you are looking at in the photos is the exact one you asked for not posted by an amateur who thinks it is the plant in question. Uses correct plant teminology but not so advanced as to not be understood by the beginner. All information is based on years of study by professional horticulturalists, botanists and biologists. What more could you ask for? Only drawback is that to gain complete access there is a subscription.