Acanthocalycium kuehassii Usually solitary or slowly branching through basal shoots, but quite variable taxon with several forms.

There are a number of varieties of this highly variable cactus species, but not all are universally recognized.

Stem: Spherical, over time it becomes slightly cylindrical, growing to a height of 12 cm or more, and a diameter of 6 to 10 cm.  The epidermis is green to dark blue grey, and become a clear powdery-grey in the older part of the stem (like some Copiapoa)

All seeds are fresh of this season and obtained from my personal collection.

NOTE: cactus seeds could be sown in any season under control environment,  however if you wanna go with nature then best time to sow the seeds is early spring/summer )

check my collection at https://www.instagram.com/planetcactus

More options at

www.planetcactus.ca