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Avatar for grayfinn
May 4, 2020 3:32 AM CST
Thread OP

Good morning, I've been nursing this vase of cacti I adopted from a forgotten office window several years ago...

I'm planning to separate them and give them their own space... and to correct the lean of the Mammillaria (I think) on the left which I think is as a result of it being in less than ideal conditions when young.... it's put on good strong growth and flowered every April over the years so I'm scared to slice off the soft part and attempt to re-root it... I've been researching and some sites say you can bury several inches of cacti after callusing so I wondered whether it's safe to bury the softer part of this cactus or whether that'll just result in rot?

I haven't found what species the one on the right is but it's in very poor condition with just an inch of good growth at the top so I might attempt cutting that off and risk rooting it... I've never done it before which scares me!

Any advice gratefully received
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Last edited by grayfinn May 4, 2020 3:37 AM Icon for preview
Avatar for MattR808
May 4, 2020 4:44 AM CST
how do I start a thread?
Avatar for Hallow
May 4, 2020 6:40 AM CST
Name: Eric
Wisconsin (Zone 4b)
Cactus and Succulents Plant and/or Seed Trader
MattR808 said:how do I start a thread?

Go to the bottom of the page. In a green banner it will say start new thread. Under that is where you start one

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Last edited by Hallow May 4, 2020 6:41 AM Icon for preview
May 4, 2020 8:20 AM CST
Name: Donald
Eastland county, Texas (Zone 8a)
Raises cows Enjoys or suffers hot summers Region: Texas Plant Identifier

@MattR808 Welcome to NGA. I see you figured out how to start a thread over in the Ask A Question forum. If you don't get an answer there, this forum would be a good place to ask your question since it's specific to a cactus. That forum has really gotten busy with the stay-at-home directives during the COVID-19 situation and it's hard to keep up with all the queries that come. I think some get missed. I saw your thread, but don't have the experience to answer your question.

Gray, Also Welcome to NGA Welcome! I think someone will see your questions and give you some good input. Again, beyond my expertise.

Good luck to both of you.
May 4, 2020 11:02 AM CST
Name: Thijs van Soest
Tempe, AZ (Zone 9b)
Region: Arizona Enjoys or suffers hot summers Cactus and Succulents Xeriscape Adeniums Hybridizer
Plant Identifier Plant and/or Seed Trader Cat Lover Dog Lover Lover of wildlife (Black bear badge) Lover of wildlife (Raccoon badge)

The Mammillaria looks like a Mammillaria spinosissima ssp. pilcayensis. I would not cut that plant. Mammillarias, though not impossible, are generally really hard to reroot from a cutting. Also this plant is known to make long 'sprawling' and if on rock faces - hanging arms. So while a repot is certainly warranted, this plant is supposed to grow the way it is - it is actually way more upright than plants of that size I have seen. So if you can find a nice pot for it I would just separate it from the other cacti and plant it there - it likes fast draining soil and a pot with a hole in the bottom.

The cactus you are saying is doing poorly, I am not sure what it is (I semi-recognize it as something I have seen before, but never positively ID'd), but that one you could more easily cut and re-root after letting the cut callous over if you were so inclined.
It is what it is!
Avatar for grayfinn
May 5, 2020 1:49 AM CST
Thread OP

Thank you @mcvansoest that's fantastic! I'm so glad I didn't just go ahead and cut it! It will be difficult for me to adjust my expectations and accept its sprawling nature after assuming it was meant to be upright!

Thank you again for all your advice, it'll be nice to get them doing well.
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