The history of an acacia was pleasantly amazed this month by a visit to an ancient tree in the courtyard of Doorwerth Castle (Netherlands). The tree is probably the oldest and thickest Robinia pseudoacacia in Western Europe, better known as acacia. After even surviving the Second World War with the Battle of Arnhem, the tree eventually lost all its green. But in 1965, with the help of a tree surgeon, a new crown of leaves developed again. A few years ago the tree was pruned again and the crown is back in balance. This history of this acacia reminded us of the strong fava bean, on the human menu for thousands of years, that inspired us to use biomimicry to mimic natural growth in urban planning.


Acacia at Doorwerth Castle (Netherlands)