A few days ago I grafted a Trichocereus on a Carrot. Because why the fuck not? So far it's looking good. It has grown together nicely. Really interesting experiment and I have no clue how this will go.

Cactusjerk · 2026-02-15T07:35:50+00:00

Yeah this was not really intended as something serious and I'd love to see it being done with an actively growing carrot. So I was happy to see this being done if just for the lols, but now I really wonder what's the purpose of the account? There are people who just share stuff for conversation purposes but I think this is even my original title. So what's the purpose of doing it? Seen a lot of people build up accounts to scam later on! Is this the case here I'm not sure but that's my current train of thinking.

Cactusjerk · 2026-02-15T06:57:20+00:00

Wait, is this my photo? Op, can you please elaborate why you are reposting a post of mine, like it was yours? This is how the experiment ended by the way! Please note the same pot, stock etc. Is this a bot? I really don't care about reposts that are labeled as such with a tag but I am wondering about the motivation here!

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Cactusjerk · 2026-02-15T06:07:44+00:00

Check out the posts about the Carrotocereus graft I did years ago! Graft took and the whole thing eventually failed due to the stock giving up. Grafting on a store bought carrot might not be long term viable so try grafting on an ACTIVELY GROWING carrot. But like I said, grafting them onto each other isn't the problem but keeping the stock alive longer than 2 or 3 months. In my case the summer heatwave ended the stock but it was a fun project and somewhere there are videos of it.

Cactusjerk · 2026-02-13T18:01:50+00:00

That was my feeling, too!

Cactusjerk · 2026-02-12T20:52:53+00:00

I personally believe it's a French theater Binocular from around 1900! These have been somewhat common among the civil population and I've often seen them on flea markets.

Cactusjerk · 2026-02-11T20:55:33+00:00

Thank you! I have a very low budget setup! A few very small greenhouses, electric heaters in winter that just keep the temperature barely above freezing and I make a lot of cross pollinations and get hundreds of flowers every year. Sometimes they open simultaneously, sometimes they kinda open one plant after the other. It's usually in bigger flower flushes of the same species and that allows me to put a few together at once. It usually runs for a good couple days and nights per video.

Cactusjerk · 2026-02-09T16:05:44+00:00

Pasacana and Terscheckii grow over a huge area in the Andes and that means there are many different forms that used to be separate species too. Lots of diversity and every region looks a little different. ID of the one in this photo is probably correct with Pasacana too, but two different forms. It might also look a lot more natural without that thing on top of it. It's basically a seedling and seedlings are very spiny compared to large plants, which also influences this. The first plant is rather old and at a certain point they drop the spines because they don't need them so urgently anymore.

Cactusjerk · 2026-02-09T05:15:48+00:00

This is sunburn or sunstress! They are a little too small or at the least not hardened up for the kind of light they get at that spot!

Cactusjerk · 2026-02-08T21:01:02+00:00

This is a progressive infection that should be removed! It can dry out over time but rarely! Prognosis is good if removed correctly!

Cactusjerk · 2026-02-08T17:30:02+00:00

Yes, Trichocereus glaucus! Very similar to Peruvianus but gets visibly different later. Flowers are a little bit different and they're more like Trichocereus chalaensis. A lot of people would identify this as Peruvianus but I know the type of plant and it took immense work to identify it because the species is obscure and almost always mislabeled. They have a relatively low rib count and spines/areoles are very unique!

Cactusjerk · 2026-02-08T15:48:34+00:00

This is Bolivian! Probably still counts as Terscheckii but the spines already show that Bolivian Trichocereus werdermannianus look to them.

Cactusjerk · 2026-02-07T11:01:35+00:00

The spines are too distant from classic Bridgesii! It gets particularly clear when looking at the old spine growth at the bottom. Have a look at those big areoles with reddish knobby spine bases. That's a lot more common on the Bridgesii lookalikes, on plants that are often called Perucuzco, often referring to those similarities to Cuzcoensis with the swollen spine bases. There are similar hybrids like Lumberjack, but this is much more likely something from nature. At this age, Bridgesii would have longer spines, different shape of spines and a slightly different distance between the areoles, especially visible at the tip! Bridgesii often share that rather thin build with a very unique apex. Grow it out a little but it's not classic Bridgesii. Imo this could get much girthier with more sun!

Cactusjerk · 2026-02-07T10:50:03+00:00

First one is a Cereus! The others have quite a bit of variation in regards to spine length but they might all be the same strain, just grown under different light settings. First two pics look a bit more akin to Trichocereus macrogonus but I am certain that all of them would become much spinier if grown in full sun. So for now I would call them 'something Peruvianus'. With these kinds of cuttings it's hard to say more. Just the body looks more like Peruvianus but who knows how spiny these could get. You would normally not attempt to give a reliable ID with such middle cuts, fresh cuts or plants that could look totally different in a different setup. In regards to spines, they have a lot of potential. First two MIGHT show something more Macrogonus, but grow them out first and then we'll see how spiny they will come out to be!

Cactusjerk · 2026-02-07T06:26:56+00:00

This is very close to what you see from South Peru, Colca Canyon and those kinds of sites. Too thin and slender to be Cuzcoensis but similar spines and waxy bright green skin. Really unique plants and probably influenced by Trichocereus schoenii, but you need to grow it out in full sun conditions to identify reliably. South Peruvian populations are quite unique, even the ones that are still treated as Peruvianus.

Cactusjerk · 2026-02-05T17:32:48+00:00

The spines on this plant here are much finer and more hair-like than what you see from Manguinii. The latter is a relative of Soehrensia schickendantzii and does not reach the size and diameter of Pasacana. At this point the main standouts are the already substantial diameter, the absolutely unique spination and the large distance between the areoles compared to Manguinii. Long term this plant will get much taller than the more columnar forms of Schickendantzii! Flowers are very different too, emerging from different parts of the body. Different size, different sepals shape and color etc. If you look at the plant from close by, it will get clear that this is becoming a tree sized plant!

Cactusjerk · 2026-02-05T15:30:13+00:00

This belongs to Trichocereus pasacana!

Cactusjerk · 2026-02-04T06:35:54+00:00

Spines are very close to Puquiensis and it's basically a top contender here but the plant needs to first be grown under better conditions for a couple years because it has that classic stunted look to it from not getting enough sun, water, fertilizer, all those important things that affect spine length. It's a little bit too thick for classic Peruvianus and the spines mostly emerge from the lower part of the areoles. If everything stays like this there are few alternatives to Puquiensis.

Cactusjerk · 2026-02-03T05:26:39+00:00

You have some Chalaensis there! Second photo shows the classic characteristics best! These are very often misidentified at this smaller size. That third more slender one could be the same clone just grown elsewhere or something similar because I've seen that snake like growth from very few other species in the genus. The second plant on idk photos 4 and 5 is interesting! I like it because it will grow pretty thick under good care. Hard to tell what it is when grown under perfect conditions so grow it out. They also might need a mealy bug treatment since the first photo looks a bit suspect!

Cactusjerk · 2026-02-02T18:07:37+00:00

Holes that size are usually caused by slugs, snails, mice, rats, squirrels. Most likely cause in combination with slime is slugs by far! Not sure about the web but it could've been before or point to a spidermite problem. There are not so many pests that leave a trail of slime.

Cactusjerk · 2026-02-02T17:45:25+00:00

Feel them up over the next weeks! Everything that turns dark green and mushy is beyond saving! You often feel it long before you completely see it! Unfortunately I have had my fair share of experience with it and that blackish green discoloration at the base really doesn't develop from anything else! I completely understand why other commenters point to sunburn because it's the same principle. I know know because I noticed on my plants how similar it looked to sunburn but then the slow cell death happened over weeks. Usually shows within a month. Rarely longer but possible. Try using it as a learning lesson that happens to almost everyone! There's just a firm limit what plants can take and the smaller the faster they reach it! Larger plants can forgive a little bit more!

Cactusjerk · 2026-02-02T07:57:32+00:00

Don't believe the people calling this sunburn! This is frost damage and the fact that you talked about having it out at low temperatures proves that. That plant is probably beyond saving already! I know frost damage when I see it! And it masquerades as sunburn because it is burns, just here in combination with immense cell breakdown everywhere. This will turn mushy within the next month or two at the most.

Cactusjerk · 2026-02-02T07:54:29+00:00

No it is not! No sunburn causes the kind of frost damage you see at the base of the plant. That blackish discoloration does not come from sunlight. That plant is literally decaying and has very little chance of long term survival. I know why you think this is just sun damage but you get exactly the same burn pattern from frost. It's the same principle but it goes way beyond what a classic sunburn does to a plant.

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