old man cactus

If you have a cactus plant and need help identifying it, this is the place to post it.
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Karla
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old man cactus

Post by Karla »

I have at least 4 different cacti, all might be referred to as old man cactus. No 1 has an old label Cleistocactus trollii, don't know if this is correct. No 4 I think might be some Espostoa, but also not sure.
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Karla
Saguaro123
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Re: old man cactus

Post by Saguaro123 »

#2 is Cephalocereus senilis. It's a rare plant, at least in the US.

#4 may be Espostoopsis dybowskii.
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ElieEstephane
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Re: old man cactus

Post by ElieEstephane »

1. Looks like oreocereus trollii. Definitely not cleistocactus
2. Agreed on C. Senilis.
3. Espostoa
4. Espostoa too. Espostoopsis is skinnier and has longer centrals. The yellow areoles are that of espostoa too.
For espostoa you have 3 choices: lanata, nana, melanostele and frutescens (lanata being the most popular)
There are more cacti in heaven and earth, Horatio, than are dreamt of in your philosophy.
One of the few cactus lovers in Lebanon (zone 11a) :mrgreen:
DaveW
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Re: old man cactus

Post by DaveW »

Off hand I cannot remember if Oreocereus was lumped into Cleistocactus in the New Cactus Lexicon without looking, but if so is better kept out!

Cephalocereus senilis used to be quite common on sale in the early 1970's in the UK, but like many other plants went out of fashion being slow growing and no chance of it flowering. In the early days collectors in the UK tended to go for "architectural plants" for their form alone, but the fashion is now for most to go for plants they have some chance of flowering in their collecting lifetime.
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Karla
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Re: old man cactus

Post by Karla »

Thanks, that is big help.
Karla
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