Artwork, research and conservation: Art professor Sam Van Aken creates hybridized trees that can grow more than 40 different types of fruit.

Data viz isn’t just a modern-day craze. Designer Manuel Lima, author of The Book of Trees, discusses the origins of the tree diagram.

Here, the typographic tree is one branch of a tree diagram, reaching from medieval drawings to Shneiderman’s treemaps. Lima has skilfully organised his book to reveal these developments.

Lessons on language families are often illustrated with a simple tree diagram that has all the information but lacks imagination. There’s no reason linguistics has to be so visually uninspiring.

Apple Tree insiders say that has happened because of one person: founder and artistic director Eileen Boevers.