Trichocereus undulosus | Live plant

A Chilean Trichocerus species only recently described in the literature! Live plant.

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Trichocereus undulosus | Live plant

(syn. Echinopsis undulosa)

We’re incredibly excited to be able to offer not one, but two forms of the recently described (2012) Chilean species, Trichocereus undulosus! There’s hardly any concrete information about this interesting cactus online, so we hope the information here proves useful to anybody wishing to learn more about this novel species.

First collected in 2008, at three-hundred-and-fifty-nine metres above sea level, in Provincia Limarí, Peña Blanca, undulosus is a branching, columnar cactus reaching approximately two-and-a-half-metres tall and eleven-to-fifteen centimetres in diameter. Dark-green in colour, it forms twenty rather undulating ribs, giving rise to the species’ botanical epithet. A particularly spiny beast, undulosus‘ white-flecked-with-brown spines grow up to four centimetres long, while its medium-sized blooms are white with a brown midline. The fruits of this species – averaging roughly three centimetres in diameter and two-and-a-half centimetres in length – are green and are covered with abundant grey hair.

While Trichocereus undulosus does bear a strong resemblance to it’s close relative, Trichocereus skottsbergii, the latter cactus is more grey-green in colour, has only twelve to seventeen ribs and thinner, longer and more flexible spines (also coloured grey with black and brown, instead of the white with brown of those of undulosus).

Trichocereus undulosus is observed in the wild growing in rocky areas of low scrub. We grow ours in a well-drained mix of roughly equal parts potting soil and perlite, watering whenever the top two centimetres of the soil become completely dry. Allow the plant to go dormant over the colder and wetter winter months (rot is not the cactus grower’s friend!).

We truly love growing new forms of Trichocereus!

Product Details

Product Type

Live plant


1 rooted plant


Size is added here when this item is in stock.






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