Maybe is a good idea to declare this June a month of Gymnos. And see what progress our plants and collections did since the last time that was 4 years ago.

Stiff spines on the way of buttons...

Not a problem.
Gymnocalycium pflanzii makes it second bloom for the season. They know how.

If your cacti mess in your job just forget about the job.
°C = (°F - 32)/1.8