• Members of the previous forum can retrieve their temporary password here, (login and check your PM).

San Pedros broke at the base - need help

I have min temps of -4c for a few hours in winter with average night temps of 0c for 3 months a year. All my trichos are fine. I've lost the odd peyote that's been out in the open but never lost an in-ground or potted trich that I can recall. They do those temperatures fine.
 
If I chop this 2.5m bridgesii, I'll have something like 5 or 6 new cuttings. Time to spread the love, I guess. (It's the one in the middle, disappearing into a tree.)20250926_133959.jpg
Every year I have some cacti that are bigger than what I can fit into my basement. I cut them 40cm above the ground and root the upper part to get a nice thick cactus once rooted. The bottom part is used either as rootstock (directly if not woody, or grafted onto a pup if it is woody) or as a base for growing pup(s).
Now that's a nice reminder, of sorts. I'd be interested to see how a few bits of bridgesii might fare as grafting stock. The peyote I've put on a PC pach is doing so well. I'd recommend experimenting with grafting to anyone who has cactus material to spare.
20250926_140554.jpg
The question is what happens when I no longer have more space in my basement for new pots, but this hasn't happened yet.
Space constraints eventually become the bane of the dedicated cactus hobbyist!
 
If I chop this 2.5m bridgesii, I'll have something like 5 or 6 new cuttings. Time to spread the love, I guess. (It's the one in the middle, disappearing into a tree.)
I never let them grow more than 180-190cm. One 40cm rootstock and two 70cm cuttings is ideal for that size ime. Middle cutting may be used for ceremony...

Now that's a nice reminder, of sorts. I'd be interested to see how a few bits of bridgesii might fare as grafting stock. The peyote I've put on a PC pach is doing so well. I'd recommend experimenting with grafting to anyone who has cactus material to spare.
I never grafted onto bridgesii. Many years ago I started with pachanoi and peruvianus and only a few bridgesii. Bridgesii turned out to be rather slow growers, but they proved to be medicinally stronger with a cleaner chemical spectrum, so they were used for other purposes rather than as rootstock. Now my focus is on various forms of bridgesii, but I have plenty of pachanoi and peruvianus rootstocks, so almost all of my bridgesii are grafted as scions onto them.

And yes, I agree - grafting is lovely once it's mastered. It allows you to work with cacti growth energy in various ways that are unthinkable compared to usual growing.
 
Space constraints eventually become the bane of the dedicated cactus hobbyist!
I cannot relate... Psych, there is twenty to thirty you can't see that could all benefit from larger pots. Another twenty or so you can't see in the yard in five gallon pots as tall as I am. Struggle between wanting to and not wanting them to take up anymore room in winter dormant season.
2.png
 
Bridgesii turned out to be rather slow growers,
Just looking at this again, I would like to report that my couple of bridgesii have fared at least as well as any of my other specimens growth-wise, if not better. They've outpaced a macrogonus in terms of length if not girth, to the extent of falling over in a storm and forcing the weighty decision in finally having to cut the 2.7m long example, partly due to damage incurred in the incident but also because it had grown another 10" this year and would no longer have fitted back into my conservatory in an upright orientation.
 
Just looking at this again, I would like to report that my couple of bridgesii have fared at least as well as any of my other specimens growth-wise, if not better. They've outpaced a macrogonus in terms of length if not girth, to the extent of falling over in a storm and forcing the weighty decision in finally having to cut the 2.7m long example, partly due to damage incurred in the incident but also because it had grown another 10" this year and would no longer have fitted back into my conservatory in an upright orientation.
My new bridges (about 20, all with a good reputation) grew very nicely as scions this season — roughly 2 kg in 14 months, all from small scion pieces. It’s hard to say whether this was thanks to the rootstocks or if they would have grown quickly on their own.
My goal was to produce enough material for testing (both quantitative and qualitative), so I cut them back, leaving a ring on the rootstock to generate new pups next year. If they turn out to be suitable for my purposes, I’ll let the pups grow and wait another year until I have pieces long enough to root and grow in soil. If they don’t meet my expectations, I’ll graft something else onto the new pups.
So I’ll need about one season to get good specimens for rooting, and then within a few years I’ll see how they grow in soil. It would be great if bridges grew quickly on their own as well, since they seem to have a much better chemical profile.
 
My new bridges (about 20, all with a good reputation) grew very nicely as scions this season — roughly 2 kg in 14 months, all from small scion pieces. It’s hard to say whether this was thanks to the rootstocks or if they would have grown quickly on their own.
My goal was to produce enough material for testing (both quantitative and qualitative), so I cut them back, leaving a ring on the rootstock to generate new pups next year. If they turn out to be suitable for my purposes, I’ll let the pups grow and wait another year until I have pieces long enough to root and grow in soil. If they don’t meet my expectations, I’ll graft something else onto the new pups.
So I’ll need about one season to get good specimens for rooting, and then within a few years I’ll see how they grow in soil. It would be great if bridges grew quickly on their own as well, since they seem to have a much better chemical profile.
I hope you'll find you've got lucky with a faster-growing self-rooted bridgesii strain - is that ~100g measured as fresh growth per plant, or as biomass after drying?

Mine were on their own roots, btw - but your grafting method sounds tempting. Perhaps I could also speed up some TBMs or something; as mentioned elsewhere, my PC pach rootstock has boosted loph growth quite dramatically, even if that's something of a different ballgame (pun unintentional!) It appears to be a question of what constitutes a good rootstock - what are you using for your bridgesiis? And how big (or small) is a "small" scion piece?

I guess this opens up the possibility of grafting as many bridgesii slices as PC rootstock clones I can muster, at least once I've run out of loph buttons that need grafting. My, that was convoluted…

Also, thinking about TBMs and roots, those things put out some chunky adventitious roots quite consistently, so I wonder if you can offer any practical commentary regarding that? And is the idea of root grafting (as in attaching one of these adventitious roots to something else) that just entered my head likely to be something, or is it merely addled nonsense?

Also, do you have experience of de-grafting and re-rooting lophs? I mean, obviously I could just search for this stuff, but I haven't done it yet 😂

And what if one were to attempt grafting an adventitious TBM root onto a a pupped loph graft a suitable length of time prior to degrafting?

Hmm, so many questions…
 
I hope you'll find you've got lucky with a faster-growing self-rooted bridgesii strain - is that ~100g measured as fresh growth per plant, or as biomass after drying?
Sorry, what you mean by ~100g? I wrote 2kg, and yes, this is fresh.

Mine were on their own roots, btw - but your grafting method sounds tempting. Perhaps I could also speed up some TBMs or something; as mentioned elsewhere, my PC pach rootstock has boosted loph growth quite dramatically, even if that's something of a different ballgame (pun unintentional!) It appears to be a question of what constitutes a good rootstock - what are you using for your bridgesiis? And how big (or small) is a "small" scion piece?
Various forms of pachanoi and peruvianus. My rootstocks are very strong plants, usually 40–60 cm long with well-developed roots.
I ordered cuttings, but since most sources were in the US, I had to bring them into the EU, so the cuttings needed to be smaller (to increase the chance of getting them through customs). I cut off the tip (about 5 cm) and used that as the scion.

Also, thinking about TBMs and roots, those things put out some chunky adventitious roots quite consistently, so I wonder if you can offer any practical commentary regarding that? And is the idea of root grafting (as in attaching one of these adventitious roots to something else) that just entered my head likely to be something, or is it merely addled nonsense?

Also, do you have experience of de-grafting and re-rooting lophs? I mean, obviously I could just search for this stuff, but I haven't done it yet 😂

And what if one were to attempt grafting an adventitious TBM root onto a a pupped loph graft a suitable length of time prior to degrafting?
Sorry, I don't have any experience with TBMs or Lophs. I prefer fast growing columnar cacti.
 
Sorry, what you mean by ~100g? I wrote 2kg, and yes, this is fresh.
measured as fresh growth per plant,
about 20 [plants],
20×100g=2kg ;)

2kg dry in 14 months would, admittedly, have been phenomenal 😂 - although I'd no idea how amazing your rootstock may have been.

I don't have any experience with TBMs or Lophs. I prefer fast growing columnar cacti.
No worries - just bear in mind, though, you could turn some of your good rootstock into loph factories :love:
I'm already thinking it could be worth me grafting a slice of bridgesii onto PC and then grafting a loph onto that, in the hope of boosting the loph's alkaloid content.
 
20×100g=2kg ;)

2kg dry in 14 months would, admittedly, have been phenomenal 😂 - although I'd no idea how amazing your rootstock may have been.


No worries - just bear in mind, though, you could turn some of your good rootstock into loph factories :love:
I'm already thinking it could be worth me grafting a slice of bridgesii onto PC and then grafting a loph onto that, in the hope of boosting the loph's alkaloid content.

20×2kg each = 40 kg fresh total. With a moderate dry-to-fresh ratio estimate of about 5%, that comes out to roughly 2 kg dry in total. That’s using the whole flesh, not just the outer green layer.
Yes, they grew really nicely. They get a lot of love. :)
Here are the pictures of some of them — the time difference is 12 months and 27 days.

Image1.jpg

Image2.jpg

I don't think you can boost alkaloid content. This is not how grafting works. You can boost the growth speed, but chemical profile should stay the same.
 
20×2kg each = 40 kg fresh total. With a moderate dry-to-fresh ratio estimate of about 5%, that comes out to roughly 2 kg dry in total. That’s using the whole flesh, not just the outer green layer.
Yes, they grew really nicely. They get a lot of love. :)
Here are the pictures of some of them — the time difference is 12 months and 27 days.

View attachment 106275

View attachment 106276
Oh, now that is simply wonderful to hear of! I misread as 2kg total, not 2kg per plant! There's a mini-me doing a happy dance inside my belly now 😂
Great stuff!
I don't think you can boost alkaloid content. This is not how grafting works. You can boost the growth speed, but chemical profile should stay the same.
Well, I have the capacity to test this at least a little bit, with identical scions and stocks, but one with the extra bridgesii slice. I can even use stocks growing on the exact same roots. One of the scions will have its nutrition passing through a zone of differing metabolic capability, however briefly. It will be fun regardless of the outcome!
 
Well, I have the capacity to test this at least a little bit, with identical scions and stocks, but one with the extra bridgesii slice. I can even use stocks growing on the exact same roots. One of the scions will have its nutrition passing through a zone of differing metabolic capability, however briefly. It will be fun regardless of the outcome!
I understand your passion. I have it the same :).
And honestly, following it regardless of the outcome or any mind or ego obstacles is just the right way to it's proper use!
 
In fact these are two different spots, I have more of them. But you are right, this small wall was built last year, they called for it 😂
On closer inspection I noticed as much, and then became highly amused by your apparently near exponential increase in cactus pots.

Do you have a particular reason for choositg terracotta?
 
On closer inspection I noticed as much, and then became highly amused by your apparently near exponential increase in cactus pots.
Last year I picked up about 25 new cacti, so yes—the collection has grown a bit. I even had to cut some of the big ones, which gave me some nice new rootstock for grafting.
But I feel that my current count (around 100 plants) is more than enough for my needs, and my winter storage space is limited, so I think I've reached my limit. This year’s growth added about 60 kg, which is kind of funny considering I originally just wanted to cover my medicinal needs—and now it potentially produces about 120 g of pure medicine every year. 😂
I guess I was looking outside for something that was missing within. Well, that’s how it goes. I’m grateful I can see it now.
Do you have a particular reason for choositg terracotta?
Yes, I have to move the plants indoors for the winter, and the hard terracotta pots are perfect for that.
I live out in the bush, so the humidity is very high—around 70-80% in summer and 90–100% in September and October. It’s really important for the soil to dry properly, so the pots need to breathe, and terracotta is ideal for that.
And - I just like how it looks :)
 
Just looking at this again, I would like to report that my couple of bridgesii have fared at least as well as any of my other specimens growth-wise, if not better. They've outpaced a macrogonus in terms of length if not girth,...

My experience matches yours with bridgesii. Vertical growth some outpace or are competitive but not girth. A few bridgesii in my collection are slower as well. Have a few named bridgeseii cultivars that stand out like the Eileen loves to pup so each column adds up. All mine have four to seven columns and were only cut once. Could share some named observations by don't want to derail or hijack.

I'm already thinking it could be worth me grafting a slice of bridgesii onto PC and then grafting a loph onto that, in the hope of boosting the loph's alkaloid content.

I've had this conversation a few times with a friend. We both wondered if you can find a fast growing and potent variety to use as the base if it could increase alkaloid content. Would be interested if anyone has any studies or other content to read on that topic for sure. I've looked a few times but didn't run into much.

I need to test the Blue Achuma I have, cause that one is the first that came to mind for both of us. Pretty blue glaucos and grows quick. Every time I have a list of cuts that one surprises me by how many times I see it.

:love: Happy happy and healthy! Looking good. All through the growing season the height sneaks up on you doesn't it? Doesn't seem that drastic but then you see a photo...
 
Back
Top Bottom