The British Mammillaria Society will be holding a Zoom talk on former sections of Turbinicarpus on 14th December at 8pm or 20:00 GMT. Look on the web for a time converter for your time zone. This is a live talk not recorded therefore only viewable at that time. Joining code in link below. If you don...

Ever wondered how the difference arose? Seems it was down to the discoverer.

https://www.thoughtco.com/aluminum-or-aluminium-3980635

Douwe's method is probably the safest, if it does grow pups. As was implied, rooting variegated cacti depends on whether they have enough green chlorophyll producing tissue to thrive on their own roots. The red and orange "Moon Cacti" of course have none therefore they or their offsets can...

The December issues of the free Cactus & Succulent Review is available for download here:-

https://www.cactusandsucculentreview.org.uk/

Past issues are available for download on the green strap at the top of the link.

Also the variation of how long the hooked central spines can be in relation to the amount of wool. https://www.bing.com/images/search?view=detailV2&ccid=u4oC3YES&id=A6D72E01F9F243AE30F258B8E8DBEB407335716C&thid=OIP.u4oC3YEStrQNeetgEZJxyAHaFj&mediaurl=https%3a%2f%2fkakteenkreich.de%2f...

A lot can depend on your climate. In a hot climate watering at night may mean the pot stays wet for longer, which may be desirable. Whereas in a colder climate watering in the warmth of the day will allow it to dry out quicker than at watering at night. The question is how long is too long for our p...

You could be right loyall. If so it is a more hairy form than the average M. guelzowiana's, maybe a selected hairier clone, but there are some more hairy ones here. https://www.bing.com/images/search?q=mammillaria%20guelzowiana&qs=MM&form=QBIRMH&sp=1&ghc=1&lq=0&pq=mammillaria...

Number 1 could also be Mammillaria albicoma, but hard to tell from the photo, but seems hairier to me than M. guelzowiana. However flowers would sort it out as M. albicoma has M. bocasana type small white flowers, whilst M. guelzowiana large pink ones. Rest I agree with Anttisepp https://worldofsucc...

Hi Nino, Phil_SK did a comprehensive explanation of David Hunt's Cactaceae Systematics Initiatives here:- https://www.forum.bcss.org.uk/viewtopic.php?t=166280 https://caryophyllales.org/cactaceae/cdm_dataportal/taxon/8c8dfb49-cae4-40e2-998b-5494c396fbc1 Ritter used to do the same by publishing the t...

Hi Nino, As Arjen says the name change to "famantinensis" was published in David Hunt's "Cactaceae Systematic Initiatives" by Schlumpberger. This was the publication Hunt was using to update his "New Cactus Lexicon", which now will never happen after his death, with DNA...

It was recently brought to my attention that David Hunt's correction of Ariocarpus scapharostrus to Ariocarpus scaphirostris was probably invalid. Therefore the correct version is seemingly somewhere between the two - Ariocarpus scaphirostrus? https://www.cactusnames.org/ariocarpus-scaphirostrus/ &q...

As Nachtkrabb says there are quite a few similar Trichocereus. In fact I believe Kurt Backeberg even introduced a virtually spineless one as a grafting stock that was easier to graft onto having no spines. Many of the Trichocereus contain alkaloids, therefore were cultivated and spread around in S. ...

Scents are a matter of personal opinion since some people are more sensitive to some than others. No plants I know naturally use humans as pollinators so don't produce scent to suit us! It has been found many plants release their scents only at certain times of the day or night when their pollinator...

Cactus Shows and judging differ around the world wherever you go. Local ones are often judged by a general gardener with some classes for cacti among the garden plants, but specialist cactus shows usually use more qualified judges. Some countries rate fancy expensive pots highly in judging, whereas ...

Hi nachtkrabb in the UK we tend to insulate our greenhouses with bubblewrap in winter to save heating costs, though I also do running a cold greenhouse too. The problem is if left up all year with standard bubblewrap it only lasts a season of so before it disintegrates due to Ultra Violet light (UV)...