This variety is native to the Northermost reach of the big lagoon
Lagoa dos Patos in Rio grande do Sul.
This is the narrowest leafed Dyckia.
Also this is the most difficult South Dyckia species to adapt
when under cultivation for dieing is an ever present alternative to it.
The conditions you present to it must be exactly the same
they cope with in wilderness.
In such cases the best alternative is a seed.
Sometimes a single Dyckia seed is a better choice than half a dozen grown ups.