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Thanks for so quick reply. But whats on the top?

Trichocereus sown 9years ago. Whats on the top of the cactus, flower bud? And what species it can be?

Thank You guys for reassurance. I was worrying because the black spots started at cone, and ist not only black spot, its deeper- the same think like on M S Smith plant. Any idea whats this? Mold?

What happend to my tricho, and why? How to cure it?

Hi guys. Its part of my Gymnocalycium collection, I hope Youll enjoy watching it G.vatteri G. schickendantzii FR 444 G.mazanense f.polycephalum VS 46 G.quehlianum SE 6 G.asterium G.baldianum G.bayrianum G.horstii G.pflanzii G. platygonum JO 455b G.vatteri / G.bodenbenderianum de Ulepas

The big spiny one I bought as a bridgesii, another one as a macrogonus.Rest of the cacti I sown myself, seeds bought from german retailer Piltz as pachanoi and peruvianus and later unfortunatly mixed seedlings.

Could You help me with identification?

First- hello to everyona, its my first post. Hunab, great cacti Now I have one question. 2 years ago I bought T.peruvianus and T.pachanoi seeds from Piltz seed retailer. Now i wonder if the cacti can be potent, or only can by suitable as a grafting stock