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Platform 9 34 Bridgesii seal. Plain ring: nothing here sets a rib count, a spine length or a growth form the ring can mark.

Bridgesii

Platform 9 34 Bridgesii

Partially documented

Also written as Platform 9 3/4 Bridgesii

Platform 9¾ is a melty known for growing very slowly and for the story of how it was found: on a repossessed mountaintop property whose owner had recently died, reached by a twelve-mile hike in heavy rain, growing in bare granite. It is rarely offered for sale. Nothing has been recorded about its count, spines or colour, so the entry is an origin account rather than a description.Too little stands behind this for us to confirm it.

  • melty growth
  • very slow
  • hard grown
  • rarely offered

BridgesiiNamed clone: One original plant and every cutting taken from it, given a name by a grower.

Of the 7 things this page says, 1 names who reports it and 6 are marked as something we cannot confirm. Where a line is not settled, it says so underneath.

Added 23 Aug 2026

At a glance

Species

Trichocereus bridgesii

syn. Echinopsis lageniformis

Filed under Bridgesii

Parents

Not recorded

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

Origin

The grower posting as Thirdeyeforest brought this plant to the community's attention.

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 Platform 9 34 Bridgesii. 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.

The longer version

That grower found it on a bank-repossessed property at the top of a steep mountain, hiking twelve miles through pouring rain to reach it.Too little stands behind this for us to confirm it.

The property had belonged to an owner who had recently died.Too little stands behind this for us to confirm it.

The original stand was growing in pure granite.Too little stands behind this for us to confirm it.

Where the name comes from

The grower posting as Thirdeyeforest brought this plant to the community's attention.Too little stands behind this for us to confirm it.

Character

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

  • slow and steady to fast grower: this one leans towards slow and steady, read from the growth line below.
  • Not documented yet.

  • Not documented yet.

Growth habit
A melty bridgesii that is very slow and has been grown hard.One source states this, and our house botanist has checked it. Melty, crested or distorted growth that is slow under hard conditions is a normal thing for these plants.
Notes
availability: it is rarely offered.Too little stands behind this for us to confirm it.

What the sources say

No source we have found argues about this name — nobody has written that it is confused with another plant, or that two growers mean different things by it. That is worth knowing in itself.
Drawing of a bridgesii-type column: slim, with few ribs, areoles set widely apart and long needle spines.
A Bridgesii column, drawn. We don't grow this one, and we will not borrow anybody else's photograph of it.

Filed under the same family, Bridgesii. 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.