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Offlineoffthehook
Male


Registered: 12/09/15
Posts: 2
Loc: France-Belgium Flag
Last seen: 7 years, 5 months
Cactus Identification Help
    #23578998 - 08/26/16 08:49 AM (7 years, 5 months ago)

I have 3 cactus but I am not certain what types they are, I wish someone can help me put a name once and for all so I can care accordingly.

- N:1- Mc Daddy :



spines :






As you can see above since start of EU summer it's outside and some of the spines on the top part of the 2sd growth are colored from yellowish to black, soft and fall from a light finger push.
When on the lower part the spines have significantly grown in size/lenght, should I worry or it's reversible with some adjustement ?




When I first got Mc daddy the black unknow matter started to appear, I grated most of it as I was scared it would be some mold but to my surprise a green little ball of spike started to grow into another part on the side, the black matter dried and disappear but lately it started to appear again...


- Cactus 2 and 3 in the same pot :



Close up N2 :




close up N3 :



Since it's outside I have seen theses spots and marks i think are coming from sun exposition and maybe lack of water.
I should probably water them more often now the weather is above 25*C (even reaching almost 30*C) and probably give them a bit of shade when it is specially hot ?


I thought I had already posted about this but I couldn't find my post to check answer, I think I might have done something wrong while posting, or maybe my post wasn't relevant enough.

In that case if someone delete your post don't you get a notice so you know you don't have to go through many searches to find it ?

Thanks for anybody who will take the time to answer ! you're awesome and my cactus and I will be really grateful !


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InvisibleMostly_HarmlessM
wyrd bið ful aræd
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Registered: 05/12/09
Posts: 5,043
Loc: Perfidious Albion Flag
Re: Cactus Identification Help [Re: offthehook]
    #23579042 - 08/26/16 09:05 AM (7 years, 5 months ago)

Quote:

offthehook said:
As you can see above since start of EU summer it's outside and some of the spines on the top part of the 2sd growth are colored from yellowish to black, soft and fall from a light finger push.
When on the lower part the spines have significantly grown in size/lenght, should I worry or it's reversible with some adjustement ?




New trich spines are weakly attached and easily removed, those look just fine :smile:


Quote:

offthehook said:
When I first got Mc daddy the black unknow matter started to appear, I grated most of it as I was scared it would be some mold but to my surprise a green little ball of spike started to grow into another part on the side, the black matter dried and disappear but lately it started to appear again...




Trichs are extra susceptible to the black weeping rot. It is rarely fatal. If the callous is still hard and the skin around it all firm, all is well.

Quote:

offthehook said:
Since it's outside I have seen theses spots and marks i think are coming from sun exposition and maybe lack of water.
I should probably water them more often now the weather is above 25*C (even reaching almost 30*C) and probably give them a bit of shade when it is specially hot ?




They can adjust and take much light and heat but trichs don't mind a bit of shade. Most of those marks might clear up as the plant recovers, there might be some marking left but it won't be terminal.
Shading can help with black root too.


As to ID's, personally I don't fuss too much with trichs, if they didn't come with a label or info then :shrug2: The plants remain beautiful regardless :smile:


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Offlineoffthehook
Male


Registered: 12/09/15
Posts: 2
Loc: France-Belgium Flag
Last seen: 7 years, 5 months
Re: Cactus Identification Help [Re: Mostly_Harmless]
    #23579138 - 08/26/16 09:40 AM (7 years, 5 months ago)

Thanks for these answers !

I am reassured for the black matter on N1, I will gently scrap it off and yes it's growing nicely even with this weird thing so...


Can you tell me more about the specifics of the variety of Trichocereus they can be ? Peruvian, pachanoi...?



For information all the cactuses were given in the same time and they now are kept in the same environement.

Obviously N1 is older, looking at his actual size (Like I said over the past year the upper growth went from nothing to a what you are seeing today )

N2 looks pretty similar but his growth is way slower and his shape/color is somehow different (sure it could come from the change in growing condition from the previous owner)
I still have this feeling that they aren't related...

Both N1 and N2 look alike but I still wonder if they belong to the same variety because of the differences I've mentioned above...



N3 is definitly not the same kind. It is greener, thiner and as you can see the ribs and spines are not as defined. Actually spines are almost non existant...

And he is growing quite quickly compared to other. Not in circonference but in lenght from the little experience i have looking these I think he won't grow fatter and will keep on growing higher.

Next year I might take a slice off to get another cactus going and try to graft a peyote.



Also what do you think about taking N1 growth appart and give him his own pot, will there be any benefits to do such thing ?


--------------------
"It isn't enough until you've taken too much" Unknow philospher
-=¨It's all about pain, ink and Jewelry are for memories¨=-


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InvisibleMostly_HarmlessM
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Registered: 05/12/09
Posts: 5,043
Loc: Perfidious Albion Flag
Re: Cactus Identification Help [Re: offthehook]
    #23579165 - 08/26/16 09:50 AM (7 years, 5 months ago)

Trichocereus taxanomy is a fun topic :shocked: :nonono:

A few years back there was a fashion to relabel them Echinopsis, which less do now but you might see pop up occasionally.

One current thinking is that T. pachanoi and T. peruvianus are sub species of T. macrogonus and T. bridgesii stands apart from that complex.

Removing the top of N1 to grow on its own, would give you two plants :smile: Double the roots. The remaining stump would push out new pups eventually. Which you can then remove again to grow on their own, and so on. A mother stump :smile:

N2 and N3 both seem similar to what could be called T. pachanoi. Spination can be variable within each species/sub-species. And juvenile forms are different to what the plant will look like when mature, a spiny young plant might be relatively spineless with age, or vice-versa, with some older plants that started small spined, finally throwing some long centrals.

But this is all opinion when it comes to nailing down an ID, I'm sure there would be differing suggestions most likely more educated than mine!


--------------------
●  EG Rules and Guidelines ● 


|| Lophophora Growers Unite! || Trichocereus Growers Unite! || Stone Eaters - A Soil Revolution ||


You must gather your party before venturing forth.


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Invisiblethe_r3dz
Trich Propagator
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Registered: 03/26/15
Posts: 5,709
Re: Cactus Identification Help [Re: offthehook]
    #23579178 - 08/26/16 09:54 AM (7 years, 5 months ago)

N3 looks to me like it could be mosaic virus, but it could be sun damage or bug bites

There's lots of debate surrounding this but they say that grey spination in older growth could mean possible cuzcoensis genetics, but that's pretty easy to determine with a bioassay, N1 in this case.
What you are talking about when taking the top growth off and putting it into a new pot is called propagating, and is a very viable method to expand your collection.
make a clean cut with a sterile knife where you want, allow the cut to callous a couple weeks before planting into dry soil, I personally use a lot of perlite on cuttings I'm trying to root because I like the way the roots form around it but I have no idea if this helps promote rooting or anything
if it's going to be winter soon I would allow the plant to finish growing for the season, chop it near the end of the season and keep the cutting warm over winter with plenty of light

and MH is completely right, trichocereus ID really is just people's opinions at this point :lol: on facebook groups there are some members that really know their shit (or claim to at least)
but the plants don't follow these labels we give them, trichocereus is self-sterile and so you need two plants to make seed,
there is definitely interbreeding happening in the wild and in personal collections (intentional or otherwise)
so to make the determination between T pachanoi or T peru is extemely hard because it's likely to have both of those genetics among other stuff!


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