My best results with these plants came from using an ericaceous compost with plenty of extra grit. They were watered exclusively with rain water and given an occasional tonic of sequestrated iron. The illustrations accompanying this article indicate only those plants which I have grown which were previously regarded as Notocactus and ignores the more recent enlargement of the genus now incorporated within Parodia . No apologies are offered, I am simply old fashioned. It is more cold tolerant than most and less fussy regarding soil conditions.
Flowers can be in various shades from yellow to reddish pink.
The root system of this plant is comparatively small and I grow this plant in a fairly shallow pan using the ericaceous based compost mentioned earlier in this article. Unfortunately its fertility proved its downfall in my greenhouse. Each season it would set fruit in profusion. The fruits were difficult to remove without damaging spine clusters. However if not removed they would attract disfiguring black mould during the winter.