Questions tagged [cactus]

Member of the family Cactaceae. Desert succulents.

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7
votes
3answers
78 views

When is the winter period for plants kept in a country with no winter (or a constant room temperature)?

Reading up on how to care for a Mammillaria Elongata Cactus I see it mentions such things as suspending watering in winter for best care (and to encourage better flowering) the preferred time to re-...
8
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1answer
418 views

Help is my cactus is dying, can it be saved

I recently bought a golden barrel cactus (about two months ago), judging by its size I would say the plant is about a year old. Everything has been perfect with it until Saturday. I usually water or ...
4
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2answers
1k views

Delosperma (Ice Plant) indoors during winter

I live in Canada and it will soon be time for me to bring in my succulents and cacti. Last year I brought in two Delosperma plants and within less then a month they both died. they were both very ...
3
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1answer
170 views

What species cactus is this?

I have taken a cutting from a large cactus, and it seems to propagate well. I was wondering what species it is? Does anyone know? Thank you in advance.
4
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1answer
118 views

Identify this dead cactus - like a cleistocactus strausii, but super-dwarf?

Can anybody identify this cactus? It appears to me to be something between mammillaria elongata and cleistocactus strausii - but small, each column at most a long finger, and narrower. It died some ...
6
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4answers
357 views

Identity and give care instructions for mammillaria cactus

Hi, I think I just bought a mammillaria cactus. What is the subspecies and how do I care for it best? What colour flowers to expect? What should I do with the fruits sticking out (propagation ...
7
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2answers
2k views

Are these 'fluffy' cacti healthy?

My wife and I have had these cacti for a little over a year now. Since change happens slowly I assume we never really noticed, but now it seems like it has gotten a lot more..fluffy.. for lack of a ...
7
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4answers
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Succulent Disease Identification (kalanchoe beharensis)

Album of pictures Another album of updated pictures One leaf before being "washed" with a mild soap/water mixture Another leaf after being "washed" with a mild soap/water mixture I purchased this ...
4
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3answers
483 views

Prickly Pear Cactus is growing what looks like rot (need help)

Prickly Pear Cactus is growing what looks like rot (shown in the attached pictures) where it's getting a yellowish color in the place these things appear. Is this normal? Is it dangerous? What is ...
4
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2answers
2k views

How long can an Opuntia (prickly pear cactus) live?

Thanks to another question, we know that Opuntia can live for decades. Can they live for centuries? Rather than determining the age of a specimen, answering this positively might mean identifying one ...
4
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0answers
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Can my lemons grow in cactus soil mix

I bought cactus soil mix the other day from Calloway's for some plants. I then decided to grow lemons. So I did the whole deal. 2 weeks later I have lemon sprouts. I was wondering if I could use ...
4
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2answers
866 views

What is the bright green spike on the cactus?

What is this bright green spike on my cactus?
3
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2answers
521 views

Opuntia Cactus: To cut or not to cut?

This is related to one of my old questions here: Centering Opuntia Cactus Now, my opuntia has grown much bigger as can be seen in the picture below. The base is still very narrow and the plant tends ...
3
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2answers
2k views

Cactus growing white hard coating

One of my cactuses has been gradually growing a white coating, and the lower outgrowths seem to be shrivelling up and fading, I first noticed this about a year ago and it hasn't stopped no matter what ...
3
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2answers
3k views

Germinating succulent seeds

First a little background, I live in Sri Lanka where the temperature is at about 30c throughout the year. The sun is also very strong for the entire year and yeah we don't have different seasons here....
3
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0answers
316 views

Need help saving my broken cactus

My cactus has recently broken but it is still connected on one side. I don't know what to do. Can he be saved or is he going to be lost?
3
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1answer
44 views

Can I make my own potting soil with what I have?

I have miracle grow gardening soil as well as Hoffman and Espoma cactus mixes. Can I mix these two (part cactus mix part gardening mix) together for potting geraniums and lobelia? I'm out of general ...
3
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3answers
3k views

Why is my cactus getting long spindly arms

We've had this cactus along with 4 others for nearly 2 years and it's been transplanted to cactus soil and watered and kept in a warm sunny spot and now it's drooping badly. Has anybody got any advice ...
3
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1answer
844 views

Is my cactus infested with mealy bugs?

I have had this cactus for about 5 (or more) years, and have been treating it pretty shamefully due to me only recently researching how to garden and unfortunately being one of those who didn't care ...
3
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1answer
1k views

Flattened/Deflated cactus, snapped cactus and white spots

I've been on holiday for 2 weeks, and today I put my cacti out into the sun for the first time in a 2 weeks. I noticed immediately that one section of one cactus had "deflated", or collapsed in on ...
5
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1answer
143 views

Is this a typical growth habit for a cactus?

I was re-potting my 9+ year old cactus to a bigger pot yesterday and noticed a sizable portion of its stem is submerged. Is this a typical growth habit? What are the chances that this stem might rot ...
2
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1answer
1k views

Orange and White thing in my new house plant soil

I got these new plants from Walmart just a week ago ( Monday ) and I did some research saying to water them once a week so I waited until Wednesday to water them. The research told me to water until ...
3
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1answer
2k views

Can I plant succulents and cactus in the same pot?

I have 3 plants, Gasteria, Haworthia and one cactus, the Euphorbia enopla. I have the appropriate soil with drainage but I was told the cactus would not do well with the others. How would I go about ...
3
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1answer
98 views

Is My Cactus Doing Well?

My wife and I are a bit concerned with the appearance changes of our cactus. The plant was always growing fast, however the spring accelerated the growth even more. Some time ago we noticed the ...
3
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1answer
256 views

Overwatered cactus

I was careless with my cactus and was watering it extremely rarely. One day I decided I should take a proper care of it and this is the result So, the bases of the cacti shrink and turn green-yellow-...
4
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0answers
64 views

Cactus id: Echinopsis aurea?

I have two specimens and I am trying to positively identify them. So far, I am thinking both are varieties of Echinopsis(Lobivia) aurea. I am far from sure though. So, am I any close with my guess? ...
5
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2answers
11k views

What are these brown spots on my cactus?

My cactus has this brown areas growing across the surface since a week ago. If you try to remove them, they are like a hard skin that comes off, the surface underneath is normal green color but ...
7
votes
1answer
808 views

The age of an Opuntia (prickly pear cactus)

Opuntia, prickly pear cactus, is a hardy plant with a wide range of distribution. Its growth habit is by branching paddles, or nopales. Is there any way to measure or estimate the age of such a ...
4
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2answers
849 views

Should I repot my mammillaria cactus?

I have this mammillaria hahniana: I'm considering repotting to another container, which is more beautiful, more stable, wider and shallower. You don't see it but there is a drainage hole. Here it is: ...
6
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1answer
2k views

What type of soil do cacti prefer? (acidic or alkaline)

I have done some research and found some sites suggesting alkaline soil while others say that alkaline soil will inhibit the growth of a cactus.
5
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3answers
3k views

Why is my cactus so thin?

About one year ago, I purchased three cacti in the same pot. They looked like this when I got them: One of them got bigger over the months, but the tallest one kept thinning. As you can see from the ...
4
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1answer
652 views

Strange buds/growths on my cactus

When I purchased one of my cacti in mid-December (not identified yet), I noticed that it had some buds on its sides. I've never seen cactus flowers or buds, but that's what they seemed to be, ...
8
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1answer
265 views

What is this columnar cactus?

I am trying to identify my cactus that I planted when I xeriscaped last year. I never saved the little stick thing. I thought it was just a saguaro variation, but then it popped out all these red ...
4
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2answers
545 views

Opuntia is slouching after repotting

About 24 hours ago I repotted my Opuntia (Specie ID is Subulata but pictures look a bit different than my plant). The plant is now slouching in a way akin to how it slouches when I neglect watering it ...
7
votes
1answer
828 views

What are these white/yellowish spots on my mexican fence post cactus?

My mexican fence post cactus has developed some sort of white/yellowish fungus(?) on it. Anyone know what it is? I hope it's not a goner!!! Looking for some help to save this guy!
7
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2answers
170 views

Centering Opuntia Cactus

I originally cut some Opuntia pads I got from a seller into half and planted them in the centre of pots. Unfortunately, they seem to be growing on one side only and I fear they will get too heavy and ...
5
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2answers
2k views

Why does my cactus have a weird white coating? What type of disease is it?

My cactus used to have white little rod like insects on it, and when I put some insecticide (added by liquid to the soil around it), the insects disappeared and it grew this weird coating, as shown in ...
8
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1answer
848 views

Why is my cactus turning purple and pale?

Ever since I got this cactus it has been growing, but now it's becoming purple and paler. What am I doing wrong, and how do I solve it? I'm rather new at this gardening stuff so help would really be ...
7
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2answers
2k views

Should I cut off cactus pads to help the main branch to grow?

I have some small cactus (one year old) and they are have been producing a lot of new pads. If I remove the branching pads, the main stem will have more energy to develop itself (my main focus is to ...
5
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1answer
80 views

Black material eating away at cactus

I'm not sure what kind of cactus I have, but there seems to be some sort of black material on the side of it. What is it and what can I do to remedy it?
6
votes
1answer
311 views

What is this flowering succulent?

I just moved into this house and there are a few random potted plants left over from the previous tenants. I live in Perth, Western Australia. I recently gave this one some water since it didn't look ...
6
votes
1answer
1k views

My cactus is turning brown on top. Is this usual?

I've just bought this cactus and it's turning brown. I'm wondering if it's because I watered it too much or because of the changing weather? (We rarely have cold days here and it's started to get cold ...
4
votes
1answer
65 views

Which Cleistocactus might this be?

I purchased this beauty a short time ago and have been unable to ID it as yet. Anyone know which cactus this is? Here is a photo of the top which looks like the Epostoa Lanata Top View Pic http://...
3
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2answers
1k views

What's happening to my cactus? Why is the base of the cactus drying?

The base of my cactus seems to be drying. I water it once a week. I bought it 3mos. ago. Just recently, I have seen some whitening at the base of the cactus. It was small at first but it grows bigger ...
6
votes
2answers
838 views

Rats like to eat cactus?

Rats like to eat cactus? I have noticed that my cactus has become increasingly gnawed, and I have no idea what can be. I'm starting to take care of gardens recently and do not know much about it.
4
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3answers
579 views

Help identifying cactus/succulent and trimming

I decided to try making a terrarium with a bowl I had in the house. The plants I bought to put in it weren't labelled with what they were and in the few months since building it, one has grown like ...
3
votes
1answer
580 views

What are these potted plants with thin stems and leaves that look like sticks?

My mom gave me cuttings of this plant. She didn't know what it was but it seemed to do alright outside in the shade in Houston. What is it? Click on pictures for closer view.
5
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2answers
336 views

What is this cactus with smooth round spineless stems?

Does anyone know the name of this plant? I have been searching everywhere for its name, but failed terribly.
3
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1answer
101 views

What are these insects in my potted Schlumbergera?

I have little insects in pot with Schlumbergera. They are crawling in soil, and occasionally on the pot (it's yellow plastic). I don't see them on plant itself. They are not really in big numbers or ...
6
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2answers
5k views

How to grow a new Opuntia (prickly pear) from a cutting?

I cut this pad which grew this summer from my Opuntia and I want to make a new one. I know I have to let it dry for some time before planting it, so that the wound can heal. For now I just left it on ...