Questions tagged [cactus]

Member of the family Cactaceae. Desert succulents, but for non-cacti succulents use the [succulents] tag. Use this tag with questions about caring, propagating and identifying cactus.

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1answer
77 views

Is there any chance for this cactus?

I have this cactus cactus, but it leans heavily. The bigger it gets, the more it tends to lean. It leaned even before I repotted it, and is even worse after. Is there any saving it, or should I just ...
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what is the name of this cactus/succulent?

Hi everyone, can anyone identify this cactus/succulent? Thanks in advance for your suggestions
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862 views

Diagnosing yellow spots on my cactus growing under artificial light

I have owned a Mammillaria Nejapensis for the last few months which began showing unhealthy yellow spots a few weeks back and seems to be getting progressively worse. A photo of the cactus is attached....
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Small cactus with woolly sides identification

I got this cactus as a present, at least I think it is a cactus, but don't know what species it is. It is small now about 5-6 cm in height. It has hairy or woolly sides, and has multiple stems. Does ...
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281 views

The water in my cactus oozed out when I moved the pots and now it is kind of deflated, is it dead, is there any way to help it?

The water in my cactus oozed out when I moved the pots and now it is kind of deflated. Is it dead, is there any way to help it?
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When and how to repot this cactus?

I found this cactus in a store, it was labeled as "cactus" but I think it is one of the giant cacti (see my previous question). It is about 12 cm in height (without spines). I was wondering when is ...
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1k views

Christmas cactus: brown spots

I recently got a small Christmas cactus, and have put it on a shelf indoors, not directly exposed to sunlight (as I've been advised to do). I water it when the soil is dry to the touch. Recently, ...
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Why is this cactus plant turning yellow at the base?

I've done some research and found that yellowing/browning on the base can happen for several reasons. Sunburned Mites Root Rot from being too wet Not enough water My guess is it is root rot because ...
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241 views

What kind of cactus do I have?

I was gifted the plant about 3 years ago and don't know what it is. It's grown a ton in that time, but no sign of fruit or flowering at all. This is the first plant I've been able to keep alive and I'...
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143 views

Why is my cactus limping?

Not sure why it's been limping, the baby one also started limping and died recently. The bottom is a bit yellow but not rotten yet. Not sure how to care for it not that it's so tall
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Help revive cactus?

I bought this cactus a few years ago and I want to fix it. I don’t know how to fix the almost translucent spots it has and I would like to repot it but not sure how since the rocks are like glued in?? ...
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1answer
331 views

White spots on cactus

I’m fairly new to gardening but purchased some cactus’ last year. I noticed one started to develop a white spot on the side of it. I isolated this cactus into its own pot. Any idea’s what it is or ...
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152 views

Frostbitten cactus, turning yellow and black, can it recover?

I've had this cactus for a while now, last spring I moved it to the balcony and kept it there till now. I thought everything was ok but then I noticed that the side not facing the window was turning ...
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What should I do next to take care of this cactus which I grafted two years ago?

Two years ago I succeeded in this grafting. I would like to know how long you think it will resist the cactus feeding the graft and what to do next?
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What kind of cactus is this, and why is it drooping?

Why is this cactus drooping? I tied the top so it would stay upright and not droop, but now it’s starting to droop anyway over a period of two months. The plant belonged to my deceased fiancé and I ...
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Small cactus identification

I got this tiny cactus as a present for Christmas. I am sure it is a real cactus because of the areoles. Can anybody see what species it is? The diameter is about 3-4 cm (1.5 inch).
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128 views

Small succulent (cactus?) identification

I got this cactus from a friend, but I am not sure if it is really a cactus. It could also be a succulent other than cacti. Does anyone know what species this is?
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Repot dragon fruit in a definitive pot

I planted these cuttings two months ago and I have a lot of questions. Is it time for repotting? I have 26 liters pots. Is it enough? Can I plant more than one in the same pot? What kind of soil ...
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What is happening to my Agave attenuata

I have owned the depicted Agave attenuata since about half a year. It was outside until early November when local temperatures became too cold. Now it resides in in a light, moderately heated room. (...
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2answers
111 views

Cactus Identification? Are the buds real?

My friend brought me a little cactus from a plant sale. Unfortunately I don't have a clue about cacti and was wondering if someone could tell me what the little orange buds are? Are they real? I can't ...
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310 views

Cactus shoots drooping and turning olive

Hey Gardening & Landscaping SE, happy to be a new member! I am concerned for my cactus shoots and hope you are willing to help me out. Short version: My 3,5 months old cactus shoots are starting ...
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298 views

Young cactus identification

I bought another small cactus today, the sellers in the store were not sure what species it is. My guess is that it is from the genus Pilocereus, but it is a wild guess. The height is about 7-8 cm (3 ...
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822 views

Why is the bottom of my cactus discolored and soft?

I got this cactus a couple of years ago but in the last few months I have noticed the bottom half getting brownish and soft. I water the cactus about once every 6-8 days and it gets a lot of direct ...
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Strange plant or weed? [closed]

This decided to grow in with my Christmas cactus! What is it? I have had the cactus for years. Needed to add potting soil to it, and I think that's where this came from.
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593 views

San Pedro tipped over and broke

My San Pedro has been growing quite a lot the past 2 years, but very thin. It was windy the other day and found him tipped over. Not completely broke in half, only half way. So I tipped him back right ...
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What kind of cactus is this?

I just bought this plant but I am now realizing that I have no idea what it is, so looking up care tips is much more difficult than anticipated. Would you be able to help me identify it?
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110 views

Is my cactus dying? Or what is this?

So I just bought this cactus two weeks ago. First cactus or plant I’ve ever had. When I got it the plant was dry af. So I watered it a little bit and every 2 days or so I put it on the window sill ...
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355 views

What kind of cactus is this and why are these black bumps forming on it?

Little burnt-looking bumps have been popping up on this cactus and I'm not too sure what to do about it. Can you help me figure it out?
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2answers
134 views

Help identifying a cactus

I got this cactus as a gift. Can somebody please identify what it is? Thank you.
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1answer
806 views

What is wrong with my cactus?

I'm hoping someone can help me but I'm afraid it's too late. I've had a cactus for about 3 years and he suddenly started losing color, turning brown, and getting a little droopy (see pictures) a few ...
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1answer
62 views

Soil condition for catus seedling

I have a cactus seedling (Pachycereus pringlei), it is one month old now (germinated end of August). During this time I kept the soil very moist and wet. My question is when do I switch to normal ...
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4k views

Cactus spines turning yellow?

I'm a first time cactus owner. My flatmate is watering it while I'm out on long holiday, and she sent me a picture showing that the spines are yellowing. I've read this can be a sign of old age, but ...
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818 views

Advice on LED light periods for cactus

I want to grow large cacti, see my previous question. So I start with small plants and to keep them growing in winter time I want to give them LED (special grow) light. I was wondering about the best ...
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Ants visiting Opuntia

My (elderly) Opuntia gets regular visits from a few ants, which apparently like to draw liquid where its cactus spines emerge. For this relationship between species, do we know whether it is a ...
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2answers
334 views

Small cactus from garden center identification

I bought a small cactus from the garden center, but it doesn't say which species it is. Can anyone identify this cactus? For reference I put it next to a coin of about 3 cm (1.2 inch) in diameter. ...
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1answer
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Agave is sweating

It looks as if my agave is "sweating" a crystalline substance. The droplets are approx. 2 mm in diameter and twice as long. Is this as it should be (also the surrounding yellowish patch in the ...
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2answers
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Various Questions About Fairy Castle Cactus

I have a few questions about my Fairy Castle Cactus. It’s barely grown since I bought it, in contrast to my other plants. I’ve read conflicting info about the amount of light it likes. I’m using the ...
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626 views

Dark spots on cactus?

My elderly relative has asked me to do a research on her cactus which has recently got these dark spots: I poked them and they are dry and hard when you touch them. There is no liquid or mush. They ...
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Watering huge cactus

In the question big-cactus-identification-and-how-long-does-it-take b.nota gives us a nice photo of big cactus. The second thing that struck me was how the soil level is about 0.00000001 inches from ...
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Big cactus identification and how long does it take?

I found these huge cacti in a garden-center, the two on the right. The largest in the back was over 1.5 m in length! They were a little bit too expensive, so I thought maybe start from seed... What ...
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1answer
12k views

Cactus is becoming brown from the bottom

I bought this cactus recently from farmer's market and it is becoming brown from the bottom. I have stopped watering it but is there anything else I can do to save it. It is kept outside in spot that ...
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2answers
402 views

Can I heal a 4 foot tall cactus after two arms were cut off?

A thief in the night cleanly amputated two arms off my 4 ft (1.2 m) tall cactus. What do I do?
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1answer
598 views

What's wrong with this cactus?

I have this cactus that is slightly wrinkly and soft at the bottom part. It sits on a window sill with all my other plants and receives around 5-7 hrs of direct sunlight every day. I water it once a ...
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1answer
231 views

Succulent turning yellow

My plant is suddenly turning yellow and I don't know what it wrong with it or if it is normal. I have it for about 4 month and this happened only this week. I don't know if it's related, but it has ...
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Cactus in hydroponics: Keep water levels up at all times?

I've read a bit online about growing cacti in hydroponics, and basically every site I found agrees that it's possible, and it should basically work like any other hydroponics: Set the plant (in an ...
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1answer
369 views

Pilosocereus cacti, growed from seeds and a lot of mistakes

I made a terrible (i hope not that terrible) mistake when growing Pilosocereus pachycladus cacti from seed, i sowed them back in November. I know it's probably not the best idea to sow them right ...
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101 views

Please help to identify a cactus

I tried to identify this cactus in order to know how much water it needs. The closest I got with the identification is this, but I'm still not sure, the color is different: http://www.cactus-art.biz/...
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Is my cactus okey?

This is my first time posting thing here n honestly the only reason I'm signing up on this website is to find out on what the hek is wrong with my cactus. So please??? I had been searching on Google ...
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Is this a aloe vera plant?

So I had this plant for around 1 year and lastly I was wondering if this is a Aloe vera plant? Kind of looks like it but I'm still unsure. If it's not that what is it?
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Is this white cottony stuff on my cactus normal?

This cactus was taken from my dad’s cactus garden before it was destroyed. It is very important that I keep it alive. I’m wondering if all this white cottony stuff on the top and the spikes is normal. ...