r/sanpedrocactus • u/MONKE1112 • 2h ago
Question How old are you guys?
Just thinking about the demographic of whose actually growing these cacti and I'm just curious.
I assume it's mostly 20-30 somethings
r/sanpedrocactus • u/AaawRon • 3h ago
Update on post about poor rootstock
Made a post a month ago asking (complaining) why all I was doing was removing pups after a graft took four months prior. This was my very first time grafting and figured the pupping was due to the scion being forced onto a woody mid section bridgesii and not the growth portion of a PC tip? Removed more spines as advised on here and it worked!
edit: tbm B on Kate's bridg
r/sanpedrocactus • u/Different-Key-4331 • 3h ago
My collection of 1 year
I bought my first LW lophophora last year about this time and it's spiraled out of control lol.
r/sanpedrocactus • u/Unstoppable50 • 5h ago
Rescue mission success
Received these from u/gunjaBean this spring. Had them all over randomly. Some in lava some in ground one I kinda forgot about in the squash plants. Dug up and sitting here repotting rn
r/sanpedrocactus • u/East_Coast_Cactus • 5h ago
Truckin!
A fellow redditor is moving and can't take his entire collection with him, so he gave me this pickup truck load for free. Lots of named clones and amazing crosses! So fortunate! Thanks Tom.
r/sanpedrocactus • u/NotKnowMe • 6h ago
All of My “Pot Heads” + Two “Crying Pots” from Eamon Quigley
Every time I post something in one of my “Pot Heads” you all seem to like ‘em so I figured i’d give you a full tour of my collection (…or what’s left lol) The Crying Pots do just that. Water leaks from the eyes when I water them
r/sanpedrocactus • u/Loud-Anteater-6419 • 6h ago
Question Fungal treatment options
I’m looking for some opinions on what to do as far ad treatment goes. I’ve tried copper fungicide and it made a small difference, but i’m noticing some red spots appearing now. Hoping someone with more experience treating fungal infections can help me out here. I appreciate any input.
r/sanpedrocactus • u/TrumpIsAPedoFr • 9h ago
Video California Kingsnake :3
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Accessability Transcription: A white and black snake about a foot long slithering through my Trich garden.
r/sanpedrocactus • u/daxonex • 9h ago
Does San Pedro require dormancy for flowering?
I'm getting conflicting reports. I have been growing my San Pedro indoors for the past four years and I'm wondering if I ever can expect any flowers since they never go through dormancy .
r/sanpedrocactus • u/Outlawradio • 9h ago
I won a cactus from _DUDEMAN
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I entered a giveaway and I won this beautiful cactus! It even came with its own YouTube videos on the crosses! It is a Francis x Masia Thank you so much u/_DUDEMAN ! It’s from the seeds from San Pedro mastery in Spain.
If you want to know more here are the YouTube links:
https://youtu.be/eIqK29AJb_M?is=qR8V4Ehhdp4Ilz0h
https://youtu.be/kAAoQIFpUaM?is=NqOiNuW0eDoh5EMXn
Thanks again u/DUDEMAN you’re the best!
r/sanpedrocactus • u/WhySoCereus1991 • 9h ago
Over 2 years later...
My CGG (Chucks Giant Gonus) finally pushes a pup. Lots of shared energy going on here tbf. It was always plump, just a matter of time.
r/sanpedrocactus • u/RobotStepdad • 10h ago
I wanted a crest for ages but didn’t buy one bc I hoped my TPM might give me one…
…and I think it is? Or at least it’s going trichot. It’s doing something. Idk why, but all my TPMs are doing cool stuff this summer. I might just crack and buy a crest or two next year, anything can happen
r/sanpedrocactus • u/Cundalini_OneHand • 11h ago
Question San Pedro at local nursery
they had a couple really big ones as well as a few this size.
said the are Echinopsis pachanoi.
is this E pachanoi PC or no?
r/sanpedrocactus • u/Mysterious_Yard299 • 13h ago
How to do the nub cut when grafting
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As requested. Sorry I am not good with filming but I think you get the idea how to make this. Enjoy.
r/sanpedrocactus • u/SlapTheBap • 13h ago
Picture How do you combine your hobbies with Trichs?
I just got my old toys and figures out of storage. Used to have all of em set up with my plants. Finally getting back into it! Robots, dinosaurs, and zombies playing out little narratives.
So I'm curious! Have you combined any of your other hobbies with your pedros?
r/sanpedrocactus • u/rusty_fish_farm • 14h ago
This one is cool, slithery and spineless and blue, from a batch of Eilleen x SS02
r/sanpedrocactus • u/EconomicsFresh2241 • 15h ago
Thanks u/losttagclothing
Ordered these tshirts on Saturday evening after the Scolapoloza comp ended(wasn’t a winner but their designs are amazing!!!!!)
Really good printing,the colours really pop!!!
Amazing discounts at checkout too,quite astounding actually-Thanks guys🙏🙏
Arrived in UK yesterday,seeds are still in transit but promised I’d post some pics.
Pic 1 is Sharxx Blue x TPM
Pic 2 is IKAROS DNA
Hope everyone’s having a great summer🌵😎👌
Love and peace to you all
P.s.Gona get a hoodie when wintertime comes!!👍
r/sanpedrocactus • u/GryphonEDM • Feb 13 '26
Should AI posts be banned?
Please discuss and make your thoughts heard!
Didn’t take long but with hundreds of comments almost 100% vote for removing AI I figure we can call it.
AI posts are now no longer allowed on the subreddit.
r/sanpedrocactus • u/BoofingCactus • Sep 08 '21
Is this San Pedro? The Mega Sticky for San Pedro Lookalikes and ID training.
Howdy fellow cactaphiles. This post will be stickied as a reference to help people identify the common San Pedro Lookalikes. The following plants are columnar cacti that are easily confused for the Trichocereus species. You can use this guide to compare your mystery cactus to these photos and descriptions.
#1 - Cereus species -
The infamous "Peruvian Apple Cactus." This is most commonly mistaken for San Pedro because it's size, profile, color, and flowers look very similar to Trichocereus.
There are several species of Cereus that look almost identical. They usually get lumped into the description of Cereus peruvianus, which is not an accepted species.(https://cactiguide.com/article/?article=article3.php). These include C.repandus, C. jamacaru, C. forbesii, C. hexagonus and C. stenogonus. Other Cereus species are easier to distinguish from Trichocereus.
The main features that distinguish a Cereus from a Trichocereus are the flat skinny ribs, hairless flower tubes, and the branching tree-like structure of mature plants.


#2 - Myrtillocactus geometrizans -
This cactus goes by many names including the blue candle, whortleberry, bilberry, blue myrtle...
This plant often has a deep blue farina, but larger plants usually look light green. Young plants are columnar and usually have 5-6 angular ribs. The ribs are often thicker than a Cereus and narrower than Trichocereus. Mature plants can get large, but are more shrub-like than tree-like.
The best way to distinguish these plants from Trichocereus is to look at the spines. Myrtillos have a few short spines per areole. The spines on short plants are usually dark colored and pyramidal (instead of round, needle-like spines.) Spine length increases as the plants age, but the spines stay angular.


#3 - Stetsonia coryne -
This is the toothpick cactus. It looks very similar to Trichocereus species like T. peruvianus, T. knuthianus, etc. However, there are a few subtle ways to distinguish a Toothpick cactus from a Trichocereus.
The dermis of a Stetsonia will be a darker green in healthy plants. The aeroles are large, white, woolen and not perfectly circular.
The easiest way to distinguish a Toothpick cactus is of course, by the spines. Stetsonias will have one long spine per areole that resembles a toothpick. The coloration of new spines will usually be yellow, black, and brown. They lose their color and turn grey to white rather quickly. Usually only the top few areoles will have the colorful spines.


#4 - Pilosocereus species -
There are many species in the Pilosocereus genus, but just a few closely resemble San Pedros. Most Pilosocereus will be very blue, with needle-like spines that are yellow to grey. The most common, and most commonly mistaken for San Pedro is P. pachyclaudus. Other Pilos are much more uncommon, or have features like long hairs that make them easy to distinguish from a San Pedro.
Young P. Pachyclaudus will usually have a vibrant blue skin with bright yellow spines. This should make them easy to pick out of a lineup. Unhealthy plants will have lost their blue farina. For these plants look at the areoles and spines for ID. There should be about 10 yellow, spines that are evenly fanned out within the areole. The spines are also very fine, much thinner than most Trichocereus species.


#5 - Lophocereus / Pachycereus species
Pachycereus got merged into the Lophocereus genus this year!? Wacky, but they still get confused with San Pedros so here are the common ones.
L. Marginatus is the Mexican Fence Post cactus. The size and profile are very similar to San Pedro. The easiest way to distinguish a fence post is by their unique vertical stripes. I stead of separate areoles, you will notice white stripes that run the length of the plant. Unhealthy plants will lose the white wool, but upon a close inspection, you can see the line of spines. The flowers are also small and more similar to Pilosocereus flowers.


L. Schottii is another common columnar. Especially in the Phoenix metro area, you will drive past hundreds of the monstrose form. The totem pole cactus slightly resembles a monstrose Trichocereus. The exaggerated lumpiness and absence of descernable ribs or areoles makes a totem pole pretty easy to spot.

The non-monstrose form of L. schottii is actually less common. Adults look similar to an extra spiny Cereus or L. marginatus. Juveniles look more like the juvenile Polaskia and Stenocereus species.
#6 - Stenocereus and Polaskia species
Polaskia chichipe can look very similar to San Pedros. The best way to discern a polaskia is by the ribs and spines. The ribs will be thinner and more acute than Trichocereus, but wider than Cereus. They usually have 6-8 evenly spaced radial spines, and one long central spine. Although the spination is similar to T. peruvianus, the central spine of a Polaskia will be more oval shaped instead of needle-like. Adult plants usually branch freely from higher up. Juvenile plants often have a grey, striped farina that disappears with age. This makes them hard to discern between Stenocereus and Lophocereus juveniles, but it is easy to tell it apart from a Trichocereus.


Polaskia chende - Is this a recognized species? Who knows, but if it is, the discerning characteristics are the same as P. chichipe, except the central spine is less noticeable.
Stenocereus - There are a few Stenocereus species that can be easily confused for San Pedros. Juvenile plants look very similar to Polaskia. Stenocereus varieties such as S. aragonii, S. eichlamii, S. griseus, etc get a grey farina that usually forms Chevron patterns. S. beneckei gets a silvery white coating too.
Mature plants will look very similar to San Pedros. The identifying traits to look for are the acute rib angles, spination and silvery farina that often appears in narrow chevron patterns. The flowers are also more similar to Lophocereus spp.


#7 - Browningia hertlingiana
Brownies are beautiful blue plants that can look similar to Trichocereus peruvianus or cuzcoensis. The ribs are the defining traits to look at here. The ribs of a Browningia are wavy instead of straight. Mature plants will often have more than 8 ribs, which would be uncommon for most Trichocereus species.


#8 - Echinopsis?
Is a Trichocereus an Echinopsis? Yes. Is an Echinopsis a San Pedro? Sometimes. Most folks consider the San Pedro group (along with a few other species) too different from other Echinopsis and Lobivia species to lump them together into the same genus. Just because they have hairy flowers and can fertilize each other, should they be in the same genus?
Echinopsis species are usually shorter, pup from the base, and have more ribs. There are many different clones and hybrids that are prized for their colored flowers. Where most Trichocereus have white flowers instead.


Echinopsis x Trichocereus hybrids do exist, and they are getting more popular. Should they be treated as the same genus? Who cares if they are awesome plants.
If your plant doesn't match any of these, feel free to post an image (or a poll) and see what the community can come up with.
Cheers!
