Aztekium growth

[TomInTucson]

Did you see the recent zoom talk by Andrea Cattabriga – Slow Growing succulents, he was growing his aztekiums in gypsum like powdery rocks, I now have horticultural gypsum to add to my plants ( next year), I'm sure it can't make them any slower.

Can you possibly provide a link to an archive of that discussion?

Was it similar to the instructions given here?

https://issuu.com/andreacattabriga5/doc ... ztekium_en

[Greenlarry]

These are very nice. A difficult species?

[TomInTucson]

Although it took nearly a month (ordered 11-4, arrived 11-30), and A. ritteri was sent instead of the A. hintoni that was ordered, at least I received the coveted A. valdezii:

https://vincactus.com/products/aztekium ... 9564271901

Considering that they were sent from the Ukraine, it's understandable. The growing instructions that were included were unusual, but a very nice touch (in English).

I'll report back on my success ratio this Spring.

An update, and question:
The A. hintoni were received in a 2nd special delivery padded envelope which had 7 stamps (as the 1st). It also included extra A. ritteri seeds (both additions were gifts).How could he have made very much of a profit off of this order ($21.00 USD for Aztekium hintoniii 10 fresh seeds. × 1 $3.00, Aztekium valdeziii 10 seeds × 2 $8.00, and shipping $10.00).

Here are the unusual sowing instructions:

Temperature fluctuations are required;
17-18˚ C, (62-64˚ F) for 2 days then 24˚ C (75˚ F).

They need to be stimulated this way around 5-6 times.
Crop temperature should not be higher than 25˚ C (77˚ F).

Comments are encouraged.

[Tina]

Sorry Tom, yes very similar to instructions on the link.