For 16 years, Jones was a head-hunter, then volunteered in a garden located at a charity that offered care for adults with severe disabilities and medical conditions.
She then volunteered at Chelsea Physic Garden before becoming a full-time trainee thanks to the Historic and Botanical Gardens Bursary Scheme.
Jones left to work at a private London garden before a role came up at Chelsea, where she started work in 2011.
She said: "The position of Head Gardener at the extraordinary Chelsea Physic Garden really is walking in the footsteps of some of the most well-known horticulturalists. So many important developments in the history of horticulture medicine and agriculture have been made at Chelsea Physic Garden."
Bailey has taken up a media career including as a Gardeners' World TV presenter.