Benton End was a Tudor manor house in Suffolk where Cedric Morris, a painter and plantsman, and his life partner, the artist Arthur Lett-Haines, ran an informal art school from the 1940s through the 1970s. The garden was as important as the teaching. Morris bred irises obsessively and cultivated a landscape that became as influential as anything he put on canvas. The students who passed through included a young Lucian Freud, whose early paintings show Benton End’s unmistakable influence. Beth Chatto, who would transform British horticulture, learned to garden at Benton End. Elizabeth David was a regular at the table. The Garden Museum is now presenting an exhibition devoted to this special world. On view are paintings, drawings, photographs, correspondence, and personal objects from the school’s heyday. —Elena Clavarino