How did the cactus become the world's most-wanted plant? Maybe it has something to do with how easy they are to look after and grow: keep a cactus happy simply by giving it a bit of sunshine, sand and water. The only thing you need to beware of is pricks (also sound advice for students of the wider world!). There are thousands of varieties of cacti and succulents, many of which you can buy and send from one of our independent florists...