Member of the family Cactaceae. Desert succulents.
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42 views
How do I treat the survived parts of a cactus after some of it has rotten to prevent the problem spreading?
I have a cactus consisting of three "cylinders" growing from the same center point. Recently one of the cylinders started rotting rapidly and I had to remove that part. While I was doing that the ...
8
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1answer
115 views
Does Rebutia grow better when grafted onto an Echinopsis?
I have tried growing rebutias before, and failed because the plants lacked vigor and grew slowly. Would they do better if I flat-grafted it onto a columnar Echinopsis, to increase vigor? Are there any ...
6
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2answers
115 views
cultivating a cactus from cutting
I've recently gotten a san pedro (Echinopsis pachanoi) cutting as a gift. I'm trying to take care of it as good as possible, but I'm not sure if I'm doing it the right way.
The situation is: the ...
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2answers
47 views
Are there cacti that don't rot when overwatered?
I've got yet another cactus rotten and this was most likely causes by overwatering. I'll try to rescue it but I'll likely need a new one anyway.
Are there perhaps cacti that don't rot when ...
5
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1answer
181 views
Why is my cactus purple?
This has been going on for a while (about a year), one of my cacti has turned purple. I've just replanted it after its pot fell and broke (no, it did not spend the year on the ground). What is the ...
2
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0answers
163 views
brown patches on acanthocereus tetragonus (fairy castle cactus)
I've had this pair of fairy castle cacti for several years now, and they've done fairly well. However, I noticed today that they have developed brown patches over most of their stems and a few areas ...
7
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1answer
239 views
Do opuntia (prickly pear) cacti readily form hybrids in the wild?
I suspect the answer is yes, because they are the most diverse group of cacti.
The reason I ask is that we actually have four varieties/species and I'm having a lot of trouble identifying them! The ...
5
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1answer
108 views
How old do night flowering cereus get before they bloom?
I have a night flowering cereus that is about five years old. It is a foot tall and has a single stem. It is in a four inch square plastic pot. Is it going to flower anytime soon?
5
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1answer
127 views
Can any cacti be used as a scion on a non cactus succulent rootstock?
Anything in the cactus family can be grafted onto anything else in the cactus family, even jungle cacti to desert cacti. I've even grafted a Schlumbergera to a prickly pear. I would like to know, just ...
11
votes
3answers
194 views
What should I do if the soil shrinks and separates from the flowerpot walls?
Recently we relocated a cactus into a new flowerpot. When it was planted the soil would evenly occupy the flowerpot and adjoin the flowerpot side walls. The soil isn't cactus soil, but just regular ...
8
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3answers
149 views
How to manipulate a cactus with thick long spines?
I'm thinking of buying a cactus. Shops have a lot of those and one of the variables is the size and density of spines. Cacti with rare huge spines (something like 15 millimeters long and about 1 ...
7
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2answers
169 views
Water system for houseplants during holidays
I have a very resilient cactus that can be left alone for a month without consequences.
Now, I want to leave it alone during two months and leave it some water system.
I have seen little earthen ...
9
votes
2answers
453 views
Advice on repotting an overgrown and delicate plant
I've got several plants that are probably overdue to be repotted. One of them is a cactus with lots of new growth and sharp spines. And the other is a jade where many more of the cuttings survived ...
8
votes
1answer
486 views
What is this white growth on my cactus?
I have several cacti growing in my yard and one (t. pachanoi, if it matters) has developed a white layer across the top of the plant. It is very fine and looks almost sandy, like perhaps a mould or ...
