I agree, they both look like hybrids with thicker stems and slightly different spination which they obtained from the other parent. The name was changed to Echinopsis chamaecereus on transfer to Echinopsis since an Echinopsis silvestrii already existed and therefore took priority. If they were plac...

Great! Thanks everyone!

Are both of these cacti chamaecereus silvestrii hybrids? There's a drastic size difference between flowers.

7george wrote:Mammillaria magnimamma ?

Thank you! That was my first thought but things got confusing.

I always have trouble identifying mammillarias. If you could please help.

UPDATE: The "growing tips" got damaged somehow and the seedlings are growing out of the sides and irregular directions. More than 90% of them have more than 2 heads. I think i may have monstrose seedlings on my hands but only time will tell. I cant get a decent focused picture out of my ca...

I'd definitely take it oud of pure sand!

Well i can't help with the name but that a very beautiful specimen!

Agave americana

killbog wrote:Thank you! I immediately stuck the second cactus outside when I read this. Should I carry the big organ cactus outside?

Yes you should! However avoid full direct sun at first. Move it gradually into more and more sun or else you'll risk a nasty sunburn.

Thanks for your input guys! One of the flowers has 2 flowers inside it which reminded me of another post that the same gymno but i can't find it.

treefingers wrote:A cereus but I am not sure about the species. It looks like a cereus jamacaru or cereus uruguayanus but I am not 100% certain. Anyone?

Thank you! At least that narrows it down.

It is an opuntia sp.
The discoloration is the result of a pest attack. Maybe mealybugs? I don't think it's lethal though.

Yes, they look very good. E. grusonii is quite tolerant of different soil types, so it's not all that surprising - but it's still better to have a more open-textured, gritty potting mix. Clay is both slow to dry out and slow to take up moisture when it gets dry, it's just not good as a potting soil...

Third one could be an epiphyllum or maybe a disocactus. The second one is in extreme need of a whole lot more of light.