I found both of these Matucana madisoniorum sitting amongst a tray of gymno's at a home depot. At the time they were spineless, but I knew they were not gymno's. 6 month later the long black spines and flowers like yours. They have almost doubled in size since I acquired them. 20220525_140808.jpg 2...

It will take more than 5 weeks to show new roots. I agree with the sugestion of indirec light. But I use to spray some water in the superior part of the plant. It may absorb something. I read that adding magnesium sulfate to the water would help the plant (I have tested it but its is hard to tell th...

Thank you anttisepp Yes... it is weird to call it a Rebutia... but I dont have any arguments beyond the overall look... Usually when I dont have arguments I follow the "mainstream" (ex. check in the Tropicos Database for names and synonims). But I think I will not manage to call it a Rebut...

I have just received this, maybe it is of interest for other members too: "Dear All, We are pleased to announce our next seminar as part of our monthly series. On Thursday, June 2 (12:00 hrs, GMT -5), Dr. Joel Colchado López (MX) will be talking about rhizosphere microbiomes of desert plants (S...

LLIFLE says: " All the 60 species of genus Weingartia have been transferred to synonymy status under the genus Rebutia; about 45 or so of them as synonyms of two species, Rebutia canigueralii and Rebutia neocumingii." So probably calling this plant "Rebutia neocumingii" would be ...

Can anyone confirm that the plant #560 is indeed Gymnocalycium albiareolatum, now that I have a picture of the flowers? Or would it be a variation of G. quehlianum? Spines make me confused. Thanks! IMG_20211015_161707411_HDR_copy_768x1024.jpg IMG_20211015_161719310_HDR_copy_768x1024.jpg Looks like ...

Wow!

I would say Gymno monvillei subs horridispinum

Can anyone confirm that the plant #560 is indeed Gymnocalycium albiareolatum, now that I have a picture of the flowers?

Or would it be a variation of G. quehlianum? Spines make me confused.

Thanks!

I believe it can recover. They get red-brown sometimes.

Back in your Nov 2016 pics, you have a Pilosocereus pachycladus mistakenly labeled as Pachycereus pachycladus. Your plants must look great now 5 years later. Some pics? Shmuel Jerusalem Israel Zone 9 Yes, sure, thanks for the correction, it is for sure a Pilosocereus. In fact I have 3 different Pil...

Yeah...not sure it is a good idea to re-bury it again...I think it is risky.

From Llifle (that is not 100% reliable), for E. tulearensis : "Caudex exposure: The remarkable tuberous rootstock (caudex) is usually raised above the soil line so that this can be seen and more readily appreciated. The plants raised from cuttings produce a bunch of tangled tuberose roots, whil...

Its said that they will grow bigger caudexes when they are buried. Once they are exposed, they stop growing...Mine is buried and I know it is becoming fat...I'll wait some years more before exposing it.

In principle I would'nt agree with Antitsepp but I can be wrong. Dimensions and characteristics of sexual parts of a given taxa are usually more stable than vegetative parts. For example, a plant in the shade can display larger leaves when compared to its sibbilings that are growing in full sun, but...