The Coes hired Guy Lowell (1870-1927) and Andrew Robeson Sargent (1882-1918) to develop the landscaping begun by James Greenleaf. Guy Lowell was a well-known landscape architect, and had written and edited several books on gardening, including American Gardens (1902) owned by Mai Coe. Guy Lowell attended MIT and the Ecole des Beaux Arts in Paris, and was well connected socially. Both H.H. Rogers and the Piping Rock Club's first president, Henry Rogers Winthrop were among Lowell’s clients. In 1911, Lowell designed the Piping Rock Club’s clubhouse and surrounding grounds. Andrew Robeson Sargent’s father, Charles Sprague Sargent, was superintendent of Harvard’s Arnold Arboretum outside of Boston. He was well tutored in horticulture by his father and well connected in social circles around Boston before graduating from Harvard. Initially, Sargent continued his studies under the noted landscape architect Guy Lowell, and later collaborated with him on projects throughout the northeastern United States. Lowell later joined his student's family when he married Sargent's sister. Sargent was well liked by the Coes and undoubtedly influenced the design of Planting Fields greatly. The firm was not employed after Sargent's sudden death in 1918. Other projects Lowell and Sargent collaborated on were: Clarence H. Mackay estate "Harbor Hill" in Roslyn (c. 1905) Paul D. Cravath estate "Veraton III) in Locust Valley (c. 1914) C.K.G. Billings estate "Farnsworth" in Matinecock (c. 1914) Guernsey Curran estate "Farlands" in Oyster Bay (c. 1918) Beech Drive (1914) This is the drive from the Planting Fields Road entrance. The beech is the signature tree of Planting Fields. Blue Pool Garden (1914) This Italian sunken garden is situated at the site of the old wooden tennis court which was relocated closer to Planting Fields Road. This is the formal garden on the property and its landscape was designed in harmony with the Tea House. Vista Path (1914) This is the “main allee” for the formal gardens. Main Greenhouse (1914) Lowell and Sargent are responsible for the two wings and connecting wing. Fairhaven Beech (1914-15) The Fairhaven Beech is a purple beech tree that was brought from Mai Rogers Coe’s childhood home in Fairhaven, Massachusetts. The house was due to be razed and Mai wished to save two large purple beech trees she played under as a youngster. The large trees would give Planting Fields the look of a mature landscape. In an enormous tree-moving effort, the two beech trees were transported across Long Island sound in the middle of winter and arrived at the port of Oyster Bay. At the Coes’ expense, roads were widened and telephone and electrical wires temporarily removed to make way for the tremendous beeches. Only one of the two trees survived the replanting, and it remains today the signature tree of Planting Fields. Tea House, c 1930s Tea House (1915) The tennis house was clad in lamay brick to match the Byrne mansion and embellished with neo-rococo murals by society artist Everett Shinn. The murals are after the French painter, Watteau, whom Shinn greatly admired. A light aqua colored trim matched the color of the tiles that give the Blue Pool its name. A matching latticework interior created a visual flow between the outside and the interior, and complimented the jewel tones of the murals. A wet bar behind one of the mirrored panels suggests the Coes used the Tea House for garden parties and cocktails. Camellia Greenhouse (1916) W.R. Coe was always looking to add new hybrids and plant species to his collection. Sargent recommended Camellias and Mr. Coe, without knowing they were a tropical plant, had ordered a shipment of them from the Isle of Guernsey. When they arrived in the chill of February, Coe had Lowell and Sargent speedily craft the blooming trees a greenhouse. On the present structure, Lowell and Sargent are responsible for the north-south wing. North Border (c. 1917) The North Border contains Rhododendrons, one of the signature plantings of the estate.