Gardener
From Tardis Wiki, the free Doctor Who reference
A gardener was an individual who grew and cultivated plants.
Georgie was the gardener at the Winterborne Public School. (TV: The Devil of Winterborne)
When Cameca stated that Topau watched over the temple every day, the First Doctor assumed that he was a gardener. (TV: The Aztecs)
Mechon 179 was a Mechonoid gardener on the planet Hesperus and helped defending it against a Daleks invasion, ultimately being destroyed in the attempt. (PROSE: War of the Daleks)
Hass worked at Aklaar's Park on Phobos before Braxiatel recruited him to be a gardener at the Braxiatel Collection. (PROSE: Against Gardens)