
A gardener is someone who practices gardening, either professionally or as a hobby.

Abdalonimus was a gardener, but of royal descent, who was made King of Sidon by Alexander the Great in 332 BC.

Mary Oyiela Abukutsa-Onyango is a humanitarian and agricultural scientist from Kenya who specializes in olericulture, agronomy, plant physiology. Abukutsa-Onyango is a professor of horticulture at Jomo Kenyatta University of Agriculture and Technology whose work focuses on African indigenous food crops. Abukutsa Onyango has studied how African indigenous vegetables can be used to combat malnutrition in Africa while maintaining a secure form of revenue even during more challenging weather and climate.

Everard Francis Aguilar was a Jamaican horticulturist, stamp dealer, and philatelist.

Ali ibn Abi Talib was a cousin and son-in-law of the Islamic prophet Muhammad, who ruled as the fourth caliph from 656 until his assassination in 661. He is one of the central figures in Shia Islam and is regarded as the rightful immediate successor to Muhammad as an Imam by Shia Muslims.

An arborist, tree surgeon, or arboriculturist, is a professional in the practice of arboriculture, which is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture.

György Bálint was a Hungarian horticulturist, Candidate of Agricultural Sciences, journalist, author, and politician who served as an MP.

Iris Bannochie was a Barbadian horticulturalist who was the leading expert on horticulture on the island of Barbados.

Ramon Cabanos Barba is a Filipino inventor and horticulturist best known for inventing a way to induce more flowers in mango trees using ethrel and potassium nitrate. Barba was proclaimed a National Scientist of the Philippines in June 2014.

Emanuel W. Bonavia was a Maltese surgeon in the Indian Medical Service who wrote on many aspects of natural history, economic botany, and pioneered horticultural research in Lucknow. He was the first superintendent of the Lucknow Provincial Museum and the founder of the Lucknow Horticultural Gardens.

Howard Dill was a Canadian giant pumpkin breeder who patented a pumpkin seed variety called Atlantic Giant. Dill was known as "The Pumpkin King" and "The father of all pumpkins".
Enlil-bāni, ca. 1798 BC – 1775 BC or 1860 – 1837 BC, was the 10th king of the 1st Dynasty of Isin and reigned 24 years according to the Ur-Isin kinglist. He is best known for the legendary and perhaps apocryphal manner of his ascendancy.

Walter Le Montais Giffard was a Hawaiian diplomat and a member of Liliʻuokalani's Privy Council of State. He was born on the Island of Jersey in Great Britain and moved to Hawaii at a young age, working his way up through the W. G. Irwin & Co., Ltd organization to partnership and trustee. Giffard was one of the consulting landscape architects for the grounds of the Royal Hawaiian Hotel in Waikiki. He was influential in the agricultural quarantine to protect Hawaii's sugar cane fields, and helped introduce the Yellow Caledonia cane to the growers.

Desmond Ho is a landscape designer and horticulture specialist based in Malaysia. He is responsible for initiating the Malaysian theme garden. It is called Neo Nusantara and reflects Malaysia's cultural heritage. His Malaysian garden concept has been recognized in Japan, Ireland, Switzerland, and New Zealand. He shared his knowledge and experiences through public press by becoming the columnist for New Straits Times, The Star, and Berita Harian, appearing in local shows such as Casa Impian and wrote a guidebook titled Desmond Ho's Guide to Beautiful Home Gardens published by MPH Group.

August Kanitz was a Hungarian botanist.

Georgii Dmitrievich Karpechenko was a Russian and Soviet biologist. His name has sometimes been transliterated as Karpetschenko.

George Leslie Sr. (1804–1893) was a gardener in Scotland and Upper Canada, a plant merchant, a magistrate and the namesake of Leslieville.

Norah Lindsay was a socialite garden designer who between the World wars became a major influence on garden design and planting in the United Kingdom and on the Continent.

Henderson William Luelling was an early Oakland, CA settler, horticulturist, Quaker and abolitionist. He introduced varietal fruits to the Pacific coast, first to Oregon and later to California, and gave the Fruitvale district its name. In his later years, he led a Utopian community from California to Honduras, only to encounter overwhelming adversity, which sent him back to California.
Ogawa Jihei VII , also known under his titular name as the seventh Ueji (植治), was a Japanese garden architect of the Meiji era and Taishō era of modern Japan.

Bertram Charles Percival Park (1883–1972) was an English portrait photographer whose work included British and European royalty. Engravings of his photographs were widely used on British and British Commonwealth postage stamps, currency, and other official documents in the 1930s. His theatrical portraits were the source for two paintings by Walter Sickert.

William Burns Paterson was an educator and horticulturist. He is chiefly known as an educational provider, being involved in establishing Alabama State University. He was a Democrat, a Presbyterian, and a charter member of the Alabama State horticultural society.

George Samuel Perrottet, also known as Georges Guerrard-Samuel Perrottet, Guerrard Samuel Perrottet, Gustave Samuel Perrotet [sic], and Samuel Perrottet, was a botanist and horticulturalist from Praz, in the commune of Vully-le-Bas, today Bas-Vully, canton Fribourg Switzerland. After expeditions in Africa and Southeast Asia where he collected plant and animal specimens, he worked in French Pondicherry, India, where he established a botanical garden. He took a special interest in plants of economic importance and was involved in the activities of acclimatisation societies in the various colonies of France. Many of his zoological specimens, sent to museums in France, were examined by other naturalists and named after him.

Carmen Lind Pettersen was a Guatemalan painter known for her watercolors of the landscape and traditional costumes of Guatemala, as well as her book, the most complete reference work on the textiles of the Guatemalan high plateau. Her works were often listed in guidebooks for the country and in 1976, she was awarded the Order of the Quetzal for her artistic merit. Some of her paintings are in the permanent collection of the Ixchel Museum of Indigenous Textiles and Clothing.

Rodney and Rachel Saunders were British botanists and horticulturalists who established Silverhill Seeds in Cape Town in the 1970s. They collected and studied rare specimens of South African plants such as Gladioli. They were stalked and murdered by terrorists in 2018 while on an expedition in the oNgoye Forest. They were aged 74 and 63 respectively.

The Honourable Sir Richard Storey, 2nd Baronet, CBE, DL, FRSA is a British businessman.

Márta Váradiné Naszályi, commonly known as Márta V. Naszályi, is a Hungarian landscape architect, horticulturist and politician, who has been the Mayor of Budavár since 2019. She is a member of the Dialogue for Hungary (PM).

Edna Margaret Walling was one of Australia's most influential landscape designers.

Sidney Waxman (1923–2005) was an American botanist and horticulturist who served as Professor of Ornamental Horticulture at the University of Connecticut's main campus in Storrs for more than thirty years (1957-1991), continuing to work on his ornamentals long after retirement. His research interests included plant photoperiodism, tissue culture, and witches’ brooms. He founded UConn's experimental plant nursery and built a national reputation for cultivation of dwarf conifers from witch's brooms, developing and naming thirty-four distinct cultivars. He also cultivated Japanese umbrella pines, larches, cinnamon bark maple, hemlocks, and azaleas. Waxman raised more than 200,000 seedlings to create a total of forty cultivars. Many of his varieties were sold in plant nurseries and garden centers.