In 2007, the Auckland-based garden writer put his passion for natives into print in The Native Plant Garden, illustrated with his own photographs.
However, it is food plants that have most of his attention at present.
A contributor to New Zealand Gardener magazine, for which he writes a regular column on edibles, last year Greville and food writer Jill Brewis joined forces to produce The Grower's Cookbook: From the Garden to the Table.
That was followed by Growing Your Own Groceries: Easy on the Pocket Vegetable Gardening, a book he says grew out of his experiences when he moved from Christchurch to Auckland and was "very hard up".
Always a vegetable grower, he looked for the cheapest ways of producing food crops, so Growing Your Own Groceries begins by showing what Greville says is an old Irish practice - making a raised bed by using turf as the walls.
Another cheapie is "a simple timber frame clad with old roofing iron".
Greville then moves on to container gardening, the answer, he says, for those "with a tiny garden or no garden at all and for busy families who don't have time for a large garden".
The book has some general suggestions on what to grow in each season, followed by a list of the easiest crops, advice on growing from seed, composting and a chapter on pests and diseases.
Greville is a prolific writer.
In addition to magazine columns, photography and design commitments he has written four books in the past two years.
Asked how he managed to do it, he replies: "By going slightly mental."
Growing Your Own Groceries: Easy on the Pocket Vegetable Gardening is published by Hyndman, pbk, rrp $20.
