The shop is closed just now. The shop is not open for orders yet. Everything here is real and grown in my own yard — have a look around — but I am not taking money until the last few things are in place. Ask about a plant

MGPM seal. Plain ring: nothing here sets a rib count, a spine length or a growth form the ring can mark.

Name only

MGPM

Name only

Also written as Mean Green P Machine

MGPM is an abbreviation before it is a plant, and the abbreviation is at least on record: growers write it out as Mean Green P Machine. The label is in commercial circulation too, turning up in a block of breeder shorthand pasted across seed listings. What none of that supplies is a species, a finder, a date or a description — so this is a name whose expansion we can state and whose plant we cannot.Reported, but not confirmed.

Other TrichocereusInformal label: Shorthand or a describing label rather than a cultivar name. It does not promise one specific plant.

Of the 3 things this page says, 2 name who reports them and 1 is marked as something we cannot confirm. Where a line is not settled, it says so underneath.

Added 23 Aug 2026

At a glance

Species

Not recorded

No source named a species for this one.

Filed under Other Trichocereus

Parents

Not recorded

No source names a mother or a father for this one.

Origin

Our own knowledge base records the expansion of the initials in two places, taken from a community sample of clone names.

no source says whether it is seed-grown or a cutting line

In the yard

Family line

what the record holds

No source in this library records a cross for MGPM. Nobody names a mother or a father for it, and no other entry here names it as a parent.

That is the record, not an oversight: of the 749 names in this library, 693 have no recorded relation either. Most named clones were selected, cut and passed along without anyone writing down what they came out of. A parent goes in here when a source states it and never because a name looks like one — a wrong pedigree would travel further than a blank one, because pedigrees get copied.

If you know where it came from, tell us — a person reads everything before it appears.

Where the name comes from

Our own knowledge base records the expansion of the initials in two places, taken from a community sample of names.Reported by one source, and not corroborated anywhere else.

Character

A bar is drawn only where one of the lines below states it — never from the species, never from a photograph.

  • Not documented yet.

  • Not documented yet.

  • Not documented yet.

Nobody has described the skin, the ribs or the spines of this one anywhere we could cite, so there is nothing here to draw or to list.

What the sources say

Knowing what the letters stand for is not knowing what the plant is; nothing on record describes it.Reported by one source, and not corroborated anywhere else.

Drawing of two plain Trichocereus columns of different heights, standing for the wider genus rather than one plant.
A Trichocereus column, drawn. We don't grow this one, and we will not borrow anybody else's photograph of it.

Filed under the same family, Other Trichocereus. The better-documented ones come first.

Keep exploring

Cultivar histories in this hobby are passed between growers; where sources disagree we say so rather than pick a side.