Trichocereus riomizquensis ‘#1’ x Trichocereus riomizquensis ‘#4’ | Seeds

(1 customer review)


A rarely-encountered columnar Trichocereus! 25 seeds.

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Trichocereus riomizquensis ‘#1’ x Trichocereus riomizquensis ‘#4’ | 25 seeds

Now this truly is a rare opportunity for all you serious collectors: Trichocereus riomizquensis ‘#1’ x Trichocereus riomizquensis ‘#4’ seed, all the way from Australia! We don’t know whether we’ll be able to re-stock once we run out of this EU exclusive, so better order soon if you’re interested…

Unfortunately, we don’t have any information on the parents of this rather rare hybrid, save that they were both of the elusive species Trichocereus riomizquensis. A controversial naming which is considered by some to be a relative of, or even synonymous with Trichocereus bridgesii (‘Bolivian Torch’), others as a candidate for the true identity of the so-called ‘Predominant Cultivar’ of Trichocereus pachanoi (‘San Pedro’), riomizquensis is a Bolivian cactus which has only been found growing naturally in one area, near the Rio Mizque. The type locality was discovered in the region by Friedrich Ritter, who labelled it ‘FR 856’ (Ritter’s also the source of the gorgeous Trichocereus scopulicola ‘FR 911’), in 1958.

While relatively rarely grown (at least knowingly), riomizquensis is sometimes encountered mislabelled as its similar relatives, such as pachanoi. It’s a highly variable species, ranging from almost spineless to much longer-spined forms – the latter very similar in appearance to bridgesii. While quite variable in form, the stems of riomizquensis usually grow roughly six to eight centimetres in diameter and have five or six ribs. The spines can be anywhere from a millimetre upward in length and are normally a honey-brown in colour, while the species’ flowers are approximately twenty or so centimetres long.

As with most Trichocereus cacti, these seeds are very easy to germinate and grow in USDA Hardiness Zones 8-11! Their main requirements consist of high humidity levels, free-draining (mildly acidic to mildly alkaline) soil and sufficient light, water and nutrients. Space plants roughly three metres apart to allow them enough room to reach maturity. Easily grown indoors in the UK and Europe!

All the seed sold by Arkham’s Botanical was freshly and ethically sourced


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1 review for Trichocereus riomizquensis ‘#1’ x Trichocereus riomizquensis ‘#4’ | Seeds

  1. Pablo Tarascio

    5 stars

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