Charles Adams Platt (October 16, 1861 – September 12, 1933) was a prominent American artist, landscape gardener, landscape designer, and architect of the "American Renaissance" movement. His garden designs complemented his domestic architecture.
Platt was born in New York City, the son of Mary Elizabeth (Cheney) and John Henry Platt. Platt trained as a landscape painter, and as an etcher with Stephen Parrish in Gloucester, Massachusetts in 1880. He attended the National Academy of Design and the Art Students League in New York, and later in Paris the Académie Julian, with Gustave Boulanger and Jules Joseph Lefebvre. At the Paris Salon of 1885 he exhibited his paintings and etchings and gained his first audience. In the decade 1880–1890 he made hundreds of etchings of architecture and landscapes. He received a bronze medal at the Paris Exposition Universelle of 1900.
A trip to Italy in 1892 in the company of his brother to photograph extant Renaissance gardens and villas led to a marked development in Platt's aesthetic approach. Platt published many of these images in his influential book Italian Gardens (Harper & Brothers, 1894), the outcome of two articles published in Harper's New Monthly Magazine in the summer of 1893. The volume was strong on the surviving gardens of the Renaissance and Baroque and made no attempt to describe their history or their designers. As well, the influences of Reginald Blomfield's The Formal Garden in England (1892) and gardens by Gertrude Jekyll illustrated in Country Life further refined Platt's style. (Platt was unaware of the first history of Italian gardens, W.P. Tuckermann's thorough Die Gartenkunst der italienischen Renaissance-Zeit, Berlin 1884.) The impact of Platt, and of Edith Wharton's Italian Villas and Their Gardens (1904) can be seen in the switch among stylish Americans from country houses set in lawns with shaped beds of annuals, swept drives and clumps of trees typical of 1885 to houses in settings of gravel-lined forecourts, planted terracing, formal stairs and water features, herbaceous borders and pergolas that are typical of the early 20th century.