In 1917, Barron had her first exhibition and subsequently showed her work at several exhibitions at the Brook Street Gallery together with weaving from
Ethel Mairet’s workshop. Some of Barron's earliest commissions came from the
Duke of Westminster's architect,
Detmar Blow; she created all the textiles used in the Duke's yacht, in his estate offices and in his hunting lodge. She also exhibited pieces at the
Omega Workshops but never became further involved in running the business. In 1923, Barron and Dorothy Larcher began to share a workshop in Parkhill Road,
Hampstead, dyeing and block-printing their designs on textiles, and selling the results to interior decorators and fashion designers. Barron favored geometric prints.
Enid Marx served as their apprentice from 1925 to 1927. Barron and Larcher were featured in a show of "Handmade Textiles and Pots" at
Heal's Mansard Gallery in London. Artist
Paul Nash said of Barron in 1926, "She is a true designer and a true craftswoman." Barron and Larcher relocated their work to Hambutts House,
Painswick,
Gloucestershire, in 1930. Stables on the property became a workshop with a large dyeing vat for working with
indigo. The grounds became gardens filled with flowers and other plants useful to their work, either practically or as visual inspiration. Among their major commissions they provided hand-printed linen for the interior furnishings, including upholstery and curtains, of a new wing at
Girton College, Cambridge in 1932, and curtains for the choir stalls at
Winchester Cathedral. For about a decade they prospered in Painswick and even hired three assistants for a time; but by the early 1940s they had to discontinue production in the face of wartime shortages. Later in life, Phyllis Barron taught art teachers at
Dartington Hall, visited classes at Stroud School of Art, and worked with several young artists interested in printing. She also became active in local government, and served for a time as chair of the Painswick Parish Council, and a member of the Stroud rural district council. ==Personal life==