Robert Sweet (1783-1835) was an English botanist, horticulturist and ornithologist. Sweet worked as a gardener from the age of sixteen, and became foreman or partner in plant nurseries in London at Stockwell, Fulham and Chelsea. In 1812 he was elected a fellow of the Linnean Society and by 1818 he was publishing beautifully illustrated works on plants cultivated in British gardens and hothouses. His works include Hortus Suburbanus Londinensis (1818), Geraniaceae (1820–30), Cistineae (1825), Sweet's Hortus Britannicus (1826–27), Flora Australasica (1827–28) and British Botany (1831). Their high quality botanical engravings were drawn and hand coloured by first class Victorian artists. Botanical publications became his main occupation, although his works are far rarer than his rivals such as William Curtis and Joseph Paxton.