Ellen Ann Willmott (19 August 1858 – 27 September 1934) was an English horticulturist. She was an influential member of the Royal Horticultural Society, and a recipient of the first Victoria Medal of Honour in 1897. She cultivated more than 100,000 species of plants, and sponsored expeditions to discover new species. More than 60 plants have been named after her or her home, Warley Place.
Ellen Willmott was born in Heston, Middlesex, the eldest of three daughters of Frederick Willmott (1825–1892), a solicitor, and Ellen Willmott (d. 1898). She and her sisters attended the exclusive Catholic convent school Gumley House for several years. In 1875 the family moved to Warley Place at Great Warley, Essex, which had 33 acres (130,000 m2) of grounds; this was to be Ellen’s lifelong home. The family were keen gardeners and developed Warley Place’s gardens together. One of the most ambitious developments was an alpine garden, including a gorge and rockery (pictured), which Ellen's father gave her permission to create on her 21st birthday.
Willmott received a substantial inheritance when her godmother, Helen Tasker, died. This enabled her to buy her first property near Aix-les-Bains, France, in 1890.
Willmott inherited Warley Place on her father’s death and continued to develop the gardens, indulging her passion for collecting and cultivating plants. She is thought to have cultivated more than 100,000 different species of plant.
Willmott employed up to 104 gardeners, and was known for being a demanding employer; she would reputedly sack any gardener who allowed a weed to grow among her flowers. She only employed men in her garden; she was once quoted as saying "women would be a disaster in the border".