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

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

Other Trichocereus

California Blue

Partially documented

California Blue is kept for its colour: a blue that deepens noticeably when the plant is grown in filtered light or shade rather than hard sun. It handles a range of light levels, tolerating full sun in dry climates, but growers who want the blue give it afternoon shade. Nobody has recorded where it came from or who named it.Too little stands behind this for us to confirm it.

  • glaucous blue
  • colour needs shade
  • light adaptable

Other TrichocereusNamed 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

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

No record found

We have read the sources we hold and none of them says where this plant came from.

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 California Blue. 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

It is kept in private collections, with no breeder or wild collection documented.Too little stands behind this for us to confirm it.

One keeper says they do not know who named it and keep it partly for the song the name recalls.Reported, but not confirmed.

What the record holds

Neither the origin nor the person who named this is on record.Reported, but not confirmed.

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.

Skin
A glaucous blue that is the whole point of the clone, and whose intensity depends heavily on light.One source states this, and our house botanist has checked it. Glaucous bloom is normal in the genus and its intensity does vary with light exposure.
Growth habit
Adaptable across light levels; it will take full sun in dry climates, but tree shade or shelter from early afternoon summer sun gives the strongest colour.Too little stands behind this for us to confirm it.

What the sources say

The wiki page states outright that the origin and the namer are undocumented.Reported, but not confirmed.

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.