In 1838, after the 2nd baronet died without male issue, the Wormleybury estate passed to the male children of his daughter Sophia, Lady Brownlow, the wife of Brownlow Cust, 1st Baron Brownlow (1744–1807) (Viscount Alford and the Hon. Charles Henry Cust). They sold it in 1853 to Henry John Grant, on whose death it passed to his widow, Mary Grant. In 1880, Under the will of H. J. Grant, the manor passed to his cousin, Henry Jeffreys Bushby, and then to his son, Mr. Henry North Grant Bushby. The late Sir Whittaker Ellis took a lease of the property, and did a good deal! to modernise the house. On his death, this long lease was purchased by Mr. Albert Pam. The estate then passed through several owners, and is currently divided into flats. The house is a Grade I listed building. Park and garden Lord Hume (1749–1838) and his wife, Lady Amelia (1751–1809) were well known among leading horticulturalists during the late eighteenth and early nineteenth centuries, both in England and abroad. With the help of their gardener, James Mean, they established many exotic plant species in the gardens and greenhouses at Wormleybury. They introduced into England, between 1785 and 1825, a large collection of rare plants, primarily from India and the Far East. In 1793 British botanist James Sowerby made some of his observations of exotic mushrooms in the hothouses and greenhouses of Wormleybury as detailed in his 1796 illustrated book 'Coloured figures of English fungi or mushrooms.' The tropical species Leucocoprinus birnbaumii, commonly known as the plantpot dapperling, was observed growing here and was likely introduced along with these exotic plant species. Botanist James Edward Smith, along with other notable botanists at the time, discussed the Humes's contribution to English horticulture in their publications. Many new plant species were first cultivated at Wormleybury after they arrived in England. According to Smith, in his volume, Exotic Botany, "Dr. Roxburgh ... has sent Lady Hume a fine young tree of this species, Dellinia speciosa, Malabar, which is now in a very thriving state. It is presumed to be the first ever brought alive to Europe". The Humes introduced the first white pomegranate (Punica granatum fl. Alba) in England in 1796, and the 'Maiden's Blush' (Camellia japonica) and the large Mandarin orange (Citrus nobilis) in 1805. The Hume's most important introduction, the first Tea Rose from China, 'Hume's Blush Tea Scented