We have large collection of cactus at home / and this cactus has been not doing well for some time- ans I was wondering is it a scale infection?

Direct sunlight in south facing window. She was great there for over one year, began to look damaged and then went downhill fast. I cut the top off-any chance of saving the healthy piece?
My child and I were very curious about the inside, hence why I cut it open!

Hello everyone I got some really old cacti from an older collector and do not know how I should plant this one. It is really top heavy and the lower third is bent.. Should I cut it or plant it horizontally in a long planter? Abd does anyone know what kind of Cacti it is? Thanks in advance!!

I made this bowl a while ago with some copiapoa but updated it with a couple of lophs. In a couple of weeks I'm entering it into a BCSS show where for the very first time there will be a dedicated habitat style class.

This guy did not want to push roots in soil, cut it back, waited a week to callus and placed it in water 2 days ago!

Lovely Beauties🌵☀️🌼

I was away for some days and it turned red out of nowhere, it used to look like the one on the second photo before.

I just bought this parodia magnifica two weeks ago, I start to notice that in the top the green is turning more yellow and also seems a bit more soft.

Maybe it's taking to much direct sunlight compare to where I bought from or is it dehydrated ?

Wait till I see a few guesses before I post a picture

More background is posted in a comment.

But I had to graft my Echinopsis famatimensis this weekend to try and save it. However, when I made the fateful cuts, I noticed that the vascular ring of the E. famatimensis was significantly larger than I expected and the vascular ring of the Stenocereus pruinosus was extremely smaller than I expected. I tried lining overlapping them (as shown in the second to last image), and did a sloped cut on the S. pruinosus to increase the surface area of its vascular ring. The second image shows the areas I tried to overlap (I couldn't find any images online of what precisely needed to be overlapping on such a large graft, for referencing the E. famatimensis.

But I'd appreciate some advice or anything from people with experience grafting cacti on whether this may successfully graft or not. I've kept it on top of my plant shelves where there's only ambient lighting (not sufficient for plants).

If this isn't successful, do you have any advice for rootstock that may be more successful?

Ive had complications with Chinese seller. Truely avoid it. I understand they have varities cultivars that could take many years to find in some places. Like my interest for copiapoa / opuntias and and rareity conophytums and many more rare things. Issues are to do with desicated roots from rot then severe dehydration for the most part.

However the few times i got to shop with thai sellers they mostly took to environment easy. Perticularly caudex plants. Didnt come with foliage but still growing strong. Ive had lophophora from them be tempermental. Not perfect but if you know what species to avoid they are great.

Ive lost the sellers ive used and no matter how hard i look on ebay thai accounts dont come up. Usually chinese sellers dominating the space.

Many thanks

Edit: in uk

10 ordered 11 arrived and 11 have appeared. First cactus grow from seed. They're supposed to be san pedro from a cactus farm in Arizona. I have 3 named cultivars already from my fellow redditors so these are more for the experience. I have no idea what a sprout should look like. Any advice for these little jelly beans?

Inherited this from a customer at my work, an older man who is moving into assisted living and sadly won’t have enough light for it. He asked me if I would be willing to take it on and obviously I couldn’t refuse-but am wondering about the species. I am confident it is a myrtillocactus but it’s growing so bizarrely I am wondering if anyone has thoughts on it. Also wanted to note that this man grew this thing inside and said he’s owned it for decades which is nuts to me.

I am so honored to be taking on this plant, I own a little over 20 cacti myself-not counting my epiphytic cacti, and really want to know as much as I can about it as I can.

Side note it weighs a bajillion pounds and getting it out of his home and into my apartment (I live on the top floor of my building and there is no elevator) was by no means an easy feat

got this one free in a shipment from cactus warehouse and no description of what it is in the box..

help on ID?

he looks like a snail 🐌

I think this is a Mexican Fence Post cactus (Pachycereus marginatus), but feel free to correct me if I'm wrong.

Pretty sure the two tall, skinny stems are etiolated from not getting enough light indoors. It's been slowly acclimated to full sun over the past few weeks and is now putting out thicker new growth and pups.

Would you cut off the etiolated stems or just leave them? I'm mostly thinking about aesthetics, but I'm curious what experienced growers would do.

Thanks!

P.S. I took the photo right after watering, so that's why the cactus and pot look wet.

I don’t know how old it is because it fell off an older cactus and I just replanted it. It’s about an inch tall. The pot it’s in is like two inches tall and 2-3 inches wide.

Last month I saw this prickly pear laying on its back in a trash pile and wanted to see it come back to life. I let it sit for a couple weeks and potted it beginning July. I watered it after 2 weeks and boom. New growth.