Coromandel Cacti is a nursery at 170 Mount Wellington Highway in Mount Wellington, Auckland, and it specialises in rare succulents and cacti, sold wholesale and retail. It was started in 1982 by Martin Walker at Sandy Bay, near the top of the Coromandel Peninsula, and moved to Mount Wellington in 1996. The nursery has won gold medals at the Ellerslie Flower Show twice. The website has a large picture library of the plants it has grown.
The nursery is open only intermittently, mostly on a Friday or Saturday, and visits are arranged by email to corocacti@outlook.com, mornings preferred. Potting mix is sold at $25 per 30-litre bag as at 2026, and pickup can be arranged most days. Mail order is no longer offered, and plants are not shipped except through Trade Me, where the nursery sells occasionally under the name desertmaniacs. The nursery's own site says the shop is currently not stocked, so the plants on sale are best seen in person.