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 last month  

The turbinicarpus have grown well and gotten chunky in the greenhouse, they really love the heat.
Which Notocactus is it?

I am not sure, I never had the tag for it. I think it Ottonis..

 last month  

The seedlings in the tray are probably ottonis, did yours have yellow or red flowers?

It's this one (old photo though). I got it in a supermarket without a tag. I think it was the first time that it bloomed the second time.

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That seedling tray is amazing by the way :D

 last month  

Definitely ottonis! The seedling tray was full of little surprises and a lot of work to pot up