Psychotria is a genus containing some 1900 species within the plant family Rubiaceae. Members of the genus are small understorey trees in tropical forests. The former genus Cephaelis is considered a synomym of Psychotria.
I love the idea of hedge box gardens. I would put 4 in the front yard with little white picket gates opening into each one. Plant veg, low growing fruit, flowers and fresh herbs in each. I think they would make a house so unique and darling!