His work is so highly regarded he was invited to exhibit in Toi Tū Toi Ora, the largest ever exhibition staged by Auckland Art Gallery Toi o Tāmaki.
That exhibition, which is currently showing in Auckland, offers insights into the development of contemporary Māori art informed by a Māori world view.
Gallery director Janet Bayly said the patiki pattern (a diamond form) is a central motif to this new body of work.
It reflects the shape of the flounder and is found in many Māori artforms.
It suggests the abundance and prosperity of food gathering and storage around this time of the year, and links also to the celestial calendar and the environment.
"For the majority of the work I have utilised geometric patterns reflective of aspects of tukutuku but not intending to replicate the practice of it directly," Hemi Macgregor said.
"There are references to patikitiki as it speaks of abundance, prosperity, food gathering and storage.
"It is in spring and summer months that the astrological marker patiki or patikitiki (the Coal-Sack nebula) begins rising before the sun at dawn and is the marker of the abundance of the spring and summer months."
Janet Bayly said she is very pleased that Hemi Macgregor has chosen his local district gallery to mount this new show.
"While he has been in previous group shows this is his first solo show here."
"The work has a strong presence and highlights our connections to the environment which is such a key characteristic of Kāpiti".
Also showing at Mahara Gallery is An Observational Practice, an exhibition of works by Kāpiti artists whose work reflects their close observation of the natural world - a pleasure which became heightened for everyone during Covid-19 lockdowns.
The exhibiting artists are Dutch-born Gerda Leenards, Frances Jill Studd, Sophie Saunders and gallery director Janet Bayly.
Both exhibitions will be open until April 28.