The United States National Agricultural Library (NAL) is one of the world's largest agricultural research libraries, and serves as a national library of the United States and as the library of the United States Department of Agriculture. Located in Beltsville, Maryland, it is one of five national libraries of the United States. It is also the coordinator for the Agriculture Network Information Center (AgNIC), a national network of state land-grant institutions and coordinator for the U.S. Department of Agriculture (USDA) field libraries.

Pomology is a branch of botany that studies fruits and their cultivation. Someone who researches and practices the science of pomology is called a pomologist. The term fruticulture is also used to describe the agricultural practice of growing fruits in orchards.
Wilhelm Heinrich Prestele was a botanical artist known for his lithographs and watercolor work commissioned by the US Department of Agriculture.
Passmore is a surname. Notable people with the surname include:
Louis Charles Christopher Krieger was an American mycologist and botanical illustrator who was considered the finest painter of North American fungi.
James Marion Shull (1872–1948) was an American botanist known for his iris and daylily cultivars and botanical illustrations.

Amanda Almira Newton was a botanical illustrator for the U.S. Department of Agriculture (USDA) who specialized in watercolors of fruit. Her work is now preserved in the USDA's Pomological Watercolor Collection, and she is the second-most prolific contributor to that archive of 7600 paintings, with her work representing roughly one-sixth of the total.

Elsie Lower Pomeroy (1882-1971) was an artist most closely associated with the American Scene Painting movement and specifically California Regionalism or California Scene Painting. She was also one of a small group of botanical illustrators who worked for the United States Department of Agriculture (USDA) in the early 20th century.
Adèle Riché (1791–1887) was a French painter. Riché was born, and lived her life in France. She is the daughter of François-Joseph Riché, chief gardener of the Paris Jardin des Plantes. A pupil of Jan Frans van Dael and Gerard van Spaendonck., she is known for her still life paintings, including watercolors, as well as her portraits. She worked most of her life as a botanical painter for the french Natural History Museum in Paris. There, she painted numerous watercolor on vellum for the Museum's collection, as well as illustrating François André Michaux's 1813 Histoire des arbres forestiers de l'Amerique Septentrionale. Her techniques included botanical, entomological, and natural painting, oil, watercolor, and on vellum, and engraving, as well as hand-colouring. She collaborated with Henri-Joseph, Pierre-Joseph Redouté, and Pancrace Bessa, also botanical artists. Appart from her scientific illustrative work, she is also a gold medalist in 1831's Salon. Riché died in Fontainebleau, France in 1878.
Regina Olson Hughes (1895–1993) was an American scientific illustrator in Botanical Art. Born February 1, 1895, in Herman, Nebraska, she became fascinated with the world of plants and flowers. Her parents were Gilbert and Johanna (Sullivan) Olson. At age 10, she contracted scarlet fever and her hearing slowly diminished until she became fully deaf at age 14. In order for her to communicate with her peers, she relied on lip reading and written notes for business work. Hughes retained her speech skills and continued to speak fluently throughout her adulthood. She became proficient in American Sign Language when she enrolled in Gallaudet University.

Royal Charles Steadman was a botanical illustrator and wax fruit modeler for the United States Department of Agriculture (USDA) who also developed a patented method of strengthening wax fruit with plaster on the interior.

Ellen Isham Schutt was an early 20th-century American botanical illustrator for the U.S. Department of Agriculture. Her work now forms part of the USDA National Agricultural Library's Pomological Watercolor Collection.

The Cactaceae is a monograph on plants of the cactus family written by the American botanists Nathaniel Lord Britton and Joseph Nelson Rose and published in multiple volumes between 1919 and 1923. It was landmark study that extensively reorganized cactus taxonomy and is still considered a cornerstone of the field. It was illustrated with drawings and color plates principally by the British botanical artist Mary Emily Eaton as well as with black-and-white photographs.

The U.S. Department of Agriculture's Pomological Watercolor Collection is an archive of some 7,500 botanical watercolors created for the USDA between the years 1886 and 1942 by around five dozen artists. Housed by the United States National Agricultural Library, it is a unique resource documenting existing fruit and nut cultivars, new introductions, and specimens discovered by USDA's plant explorers, representing 38 plant families in all. It has been called "one of the world's most unusual holdings of late 19th and early 20th century American botanical illustrations".

Mary Daisy Arnold was a botanical artist who worked for the United States Department of Agriculture (USDA) for over thirty-five years, painting watercolors of a wide variety of fruits. She is one of the three most prolific artists whose work is now preserved in the USDA's Pomological Watercolor Collection.
Alice R. Tangerini is an American botanical illustrator. In 1972, Tangerini was hired as a staff illustrator for the Department of Botany at the National Museum of Natural History by American botanist Lyman Bradford Smith. Prior to working at the Smithsonian Institution, she received a Bachelor of Fine Arts from Virginia Commonwealth University. As of March 9, 2017, Tangerini remains the only botanical illustrator ever hired by the Smithsonian.
Beverly Allen is an Australian artist specializing in botanical paintings. Her works are typically life size pieces of plants from her garden or native to Australia. Her artworks have been recognized internationally and collected in many private and public collections. She does workshops at the Royal Botanic Garden in Sydney between her art collaborations and exhibitions.
Roberta Cowing Throckmorton was an American artist, employed by the U.S. Department of Agriculture (USDA).

Mary Foley Benson was an American scientific illustrator and fine artist. She specialized in detailed, realistic watercolor paintings of plants and insects.