This week we're working with plants through time and across the world. Author and previous guest on the show Jonathan Drori explores more incredible plants from across the globe, including Tillandsia (Spanish moss) from the American Deep South. It's a mysterious relative of the pineapple plant that has almost no roots yet is woven into the history and culture of the southern states. Historian Fiona Davison tells the story of Thomas Fairchild, a London man who made the first ever intentional plant hybrid. Plus Anna Greenland presents the last of our grow-your-own beverages series with a look at elderflower.

Useful links: ► Find out more about tillandsias (also known as Spanish moss or airplant) ► Find suppliers of elder plants

Contributors: ► Fiona Davison, Head of RHS Libraries and Exhibitions ► Jonathan Drori, author of Around the World in 80 Plants ► Anna Greenland, author of Grow Easy