Is this scorch? I have never had this before.

[Nick]

Does Benjy`s Copiapoa trick i.e. decapitation, work on Feros? I would have thought so!
Nick

[Richard1]

many thanks for the replies!.

Its unusual why this has happened this year because the large porch I keep them in is heated to 10-15C.with a new heater !

I live in the North West of England and the air is particularly high in humidity and cold during the winter so maybe one day it was chilled and fungus got hold as Amante's post said.

I have checked for red spider and there isn't any- the whole collection is clean and if there is a new plant its 'quarantined' in the house for a few months. The webs were from a resident small spider that lived on the plant.

I will be off then tomorrow to get a fungicide then and treat the whole lot i think.

Its a real shame because the plant was spotless until now- a good size and colour.

[Liz M]

Hi Richard, Welcome to the Forum. Sorry to hear about your ferocactus, it sounds like you might need to start again, if you want one that is spotless. Where in the North-West do you live? We have a few thriving branches here, if you are interested.

[Diane]

Hi Richard, to the forum. I agree this is the result of cold/humidity, I get the same thing on mine too, F. latispinus seems very prone to this disfigurement, and as Vic suggests, they should be kept in a dry and warmer environment over winter.

[iann]

Here is one reason why I don't think this is simply down to cold and humidity. This seedling and all its friends calmly sailed through the coldest December and January in a decade and then on one unremarkable February day it developed a striking pattern of orange splotches.
[attachment 16817 alba6.jpg]

[Ross M]

I have noticed the same on some of my Turbinicarpus Ian. They've never had it before.

[FQ]

i think your Ferocactus gracilis may be grafted.
Rootstocks may be infected with the bacteria.

[B.A.]

Hi Richard, here,s my Latispinus not pretty
[attachment 16832 004.JPG]

[Patrick]

I have exactly the same on my Echinocactus grusonii but only on the south facing side also on a e.grusonii seedling like ian's (again on south facing side). The seedling had the same last year and recovered fine.

[Alex]

This is probably the same thing that affected all of my Mammillaria solisioides this Winter, posted on a while ago. Last year the same also happened to a new Pediocactus simpsonii, but not an older one I had had for longer.

Alex