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A thick, blunt green cutting held out over a brick paver patio and shot looking down, its top rounded into lumps with a shallow split down the middle and a few long tan spines low on the body, with dry lawn and a redwood fence behind.
Growing

ETBM (Extreme TBM)

Also written as Andrea Rossi ETBM, Extreme TBM, ETBM

An ETBM (Extreme TBM) imported from Andrea Rossi, one of Europe's well-known Trichocereus collectors and breeders. The "E" stands for "Extreme," a name given to this clone because of its oversized, exaggerated monstrose growth.

Read about ETBM (Extreme TBM) in the cultivar library →

Nothing off this one is listed at the moment. It's growing in the yard and gets cut when it's ready.

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Species group
Bridgesii
Photographed since
February 2026
Photographs
6 on this page

The story

Unlike standard TBMs, ETBM is known for producing thick, chunky growth with unpredictable monstrose character. It will throw heavy spines on one section, then go smooth again on the next — no two columns of it match.

What it looks like

Growth habit
Thick chunky growth that can throw big spines and then go smooth again.

Photographs

My own pictures of this plant, taken in the yard.

  • No spines on the top half, then three clusters of long tan ones below.

  • About eight inches against the tape.

  • Pale and split from tip to base, in a bed where the other stems are green. · May 2026

  • Thin brown scar lines run the length of the stem, and greener, spined columns stand out of focus behind it. · May 2026

  • The tag that names it, in the frame with the plant. · February 2026

Over time

Photographed over 3 months — February 2026 to May 2026, on 2 different days.

  1. February 2026

    A blue-green ETBM stem low in the bark mulch, its long pale spines splayed out from the areoles and a cluster of small green fruits at one of them, with the wooden tag reading ETBM standing in the mulch against it.

  2. May 2026

    One ETBM stem standing bone-pale and tan in bark mulch, dark cracks running the length of it, with a small green shoot at ground level beside it and green columns out of focus behind.
    A pale columnar cactus stands upright in bark mulch, chalky gray-green down its left edge and dull tan-brown across the rest of the face, its blunt top creased by a shallow notch and its skin almost bare apart from two short tan spines low on the left and dark areole scars up…

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