G'morning Nino_G, 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 your seedlings? Seedlings on the photo are 6 and a half years old. The germination rate of good seeds is quite high. I am not sure but it may give lo...

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.

More ariocarpus species were in flower yesterday.

May is the last month of autumn in here but two uebelmannia species were in flower yesterday afternoon.
Flowers of uebelmannia species are quite small.

Some ariocarpus retusus related species were in flower yesterday afternoon.
The cactus on the 1st photo seems mixed some other ariocarpus species but I am not sure because my friend gave me the seed.

G'morning AirWreck, I found the central meristem of the last remaining scion to be infected with a wee spot of rust fungus. I have never experienced to graft white Coryphantha species but experienced Astrophytum asterias. White asterias seedlings are possible to graft. I am not sure because I do not...

It is the last month of autumn in here but it seems some ariocarpus species will not be in flower in this season. The photo is one of them, a retusus v furfuraceus cv Daruma seiji. This one was also no flowers last two autumns. The cactus is a rooted off-set and shows the character of cultivar quite...

Some ariocarpus species were in flower.

3 ariocarpus retusus related species were in flower yesterday.

G'morning 7george,

Even the tweens can be different individuals.

I think you are talking about Photo IMG_4163. The cactus is one plant and has tween heads.

Frank

Degrafted ariocarpus agavoides were in flower in this morning. They have shorter and thicker tubercles than that of standard agavoides.

3 ariocarpus species were in flower yesterday.

Flowers of ariocarpus retusus cv Shinkawa Tama Zouge have come back. I have kept 24 plants sown seeds on same day.

Ariocarpus retusus related species were in flower in this afternoon.

G'morning Nino_G, My goodness Frank, what happened to those A. kotschoubeyanus f. Rio Verde? These cacti are degafted ones. They rely on own-roots but the character of "grafted" has still remained. There was a competition which was shortest period from seed to flower in a domestic cactus f...