[citation needed][1] He has participated in numerous land art projects and exhibitions internationally and created significant public sculpture commissions in NZ, Australia, the Netherlands, the UK, Germany, Italy, Denmark, France and Canada.

[citation needed][1] Some of Booth's earliest works were inspired by the clearing of scrubland in Northland Region and his concern for how this affected the balance of nature.

The major focus is to educate about the importance of lower plants and fungi for survival and the effect of climate change.

[citation needed] Canadian author and curator John Grande commented, "What is more remarkable are the various forms of sculpture he has gone on to produce, entirely unique.

While Booth's sculpture sometimes draws upon indigenous Maori and Aborigine characteristics, they remain unique, and capture aspects of topography, natural history, and landscape forms already extant in the places he works.