 He served the National Botanic Gardens of India until January 1959 when his son, Alick Percy-Lancaster pressed him to join the family at Salisbury (Southern Rhodesia), taking with him the family's Alipore Canna Collection for enjoyment in retirement.In November 1961, after his wife's death in 1960 and Alick's death in 1961, he returned to the National Botanic Gardens, where he spent the last of his years.During the work of about half a century in Calcutta, Mr. Percy-Lancaster introduced many new plants from abroad.