He was Head Gardener at Hewell Grange from 1900 to 1915, and was responsible, along with brother Hugh, for the the following features:
Grass terraces and turf steps (1900-1903); Rose garden (1903-4); Maze (1902); Paved garden and kitchen gardens (1906).
He then took up the the post of Chief Parks Officer for Cardiff vacated by his brother William Wallace Pettigrew in 1915 and remained there until his death in 1936.
For further information please see: http://www.pettigrewsparks.co.uk/