Lovely colours! Rebutia/Sulcorebutia/Aylostera group is my favourite among South-American cacti.

Strombocactus do you grow them enclosed in plastic ? They germinate easy but so small and more difficult than other tiny seed succulents like lithops. Dry out or rot is my experience. Yes, I use the same procedure as for other slow growing species (e.g. Aztekium). Seeds are sown in a sterile condit...

Seedlings of strombocactus disciformis grow very slowly. I sowed many seeds but about 50 seedlings have servived. The photo is some of them, 10~15 mm in diameter. Yes, they're not much faster than Aztekium species. Price is much lower, though (at least in Europe), due to low demand. How old are you...

Seedlings of S. disciformis, almost two years old. Plants are 3-5mm in diameter.

First T. alonsoi flower of the season:

I can't help you with the first one, but second one is Notocactus (Parodia) ottonis. At that size you may expect flowers very soon.

My goodness Frank, what happened to those A. kotschoubeyanus f. Rio Verde?

They are offsets I cut off a bunch of them a couple years ago and even through are big and flowering, no one buys them at the shows Yes, it's an interesting phenomenon that I've also observed. I'm not professional grower but a hobbyist and I don't attend shows regularly but when I have excess seedl...

Llifle online Encyclopedia says following: " Fruit: 4-10 cm long, red, green or (usually) yellow coloured pear-shaped and more or less triangular. This fruit is a curious proliferating structure, bearing 3-4 cm long leaves, which ultimately fall away, looking more part of the stems than actual ...

Very nice.
Are those young plants at the base seedlings or offsets?
Best regards,
Nino

I can't tell difference between Echinocereus triglochidiatus var. mojavensis f. inermis and Echinocereus coccineus f. inermis .

G'morning xiaohuage123, jarmilaes is a man? Honestly I do not know the exact meaning of "jarmilae". Since "Jarmila" is a Slavic origin female given name, jarmilae is not a man, I think. Some one of this forum member may be able to tell the exact meaning. Frank It's a name propos...

7george wrote: ↑Sun Apr 14, 2024 1:32 am Somebody knows about Neoporteria cachytaensis?

According to LLifle correct spelling would be Neoporteria cachytayensis. It's not a valid name and it's considered to be a form of Eriosyce taltalensis.

:-k Incredible. Considering all the precautions you have taken, I don't understand how it's possible for mold to proliferate to such extent in such short time. Have you sterilized the pots/tray/dome? You can try spraying with more fungicide, although I don't have any experience in using those. If se...