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
85 views

Identify a light green columnar cactus

I bought a Cactus from the local garden center. Unfortunately the guy that I bought the plants from was a novice so he didn't know the plant's name. Can you tell me its name plus some advice about ...
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1answer
44 views

Should i remove my prickly pear?

I have a large prickly pear cactus growing closely between a pomegranate tree and a raspberry/loquat tree. Both pomegranate and raspberries need a lot of watering and a cactus of course does not. Also ...
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2answers
951 views

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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2answers
436 views

Cactus with a white “growth”

(There are a few other questions which may be related but I am not sure if this is a duplicate. (What is this white crust forming on my cactus during the growing months? , What is this white growth on ...
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2answers
948 views

Cactus turning white/brown/yellow

I believe this cactus is a cereus jamacaru but I am not 100% sure. I had it in relatively low light room but across from a south facing window in the sunniest spot of the room. I watered it once ...
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1answer
48 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 ...
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1answer
103 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
372 views

Is this cactus unhealthy, especially at the bottom?

Our cactus is about 4 or 5 inches tall. I think it's looking unhealthy in the lower half. I also think it must receive a larger container. Recommendations? Thanks!
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Weird spots on my cactus

My cactus has significantly grown over the past few weeks and iv noticed these weird spots on it, it’s spreading around it. Dose anyone know what it could be or how to treat it?
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24 views

Echinopsis multiplex is getting brown and soft in the bottom. It also has developed a hairy growth on one side

I have been watering the cactus once a week. The bottom has got really soft and mushy. The cactus also has hairy growth on the top for a month.
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Some Pads Turning Yellow on 35 yo Opuntia engelmanii — Is this a problem?

There are two large, about 35 yo Opuntia engelmanii in my yard in Phoenix Arizona USA. Both recently flowered extensively and the fruits are now maturing. I've lived here about 6 months. There is ...
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44 views

Unidentified euphorbia turning yellow, how can i rescue it?

This is my first post and I have been looking on several forums where I can discuss plant queries. I have a couple of questions regarding a euphorbia cactus so please bear with me. I recently ...
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77 views

What wrong with my cactus

Ive had this cactus which i think is a Pachycereus Schotti/Monstrosus since years and its been growing fabulous. Ive just recently noticed it acquired some brown scales (non Insect) and looks like ...
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291 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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852 views

What is wrong with my cactus? (Red spots)

Is it dying? There are these weird red marks, is this a fungal infection or sunburn?
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1answer
118 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 ...
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0answers
3k views

Why has my prickly pear cactus gone limp? [duplicate]

I have a new prickly pear that I love and it just went limp on me tonight. I checked the soil and it feels moist but not wet and top inch is bone dry. Around the roots is a little damper. The top ...
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3answers
2k views

Pumice or perlite for succulents?

Is pumice better for cactus and succulent mix and such than perlite? Is it all about the chunks? I am thinking of making my own soil mix for succulents and cactus and other plants like jade plants ...
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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 ...
2
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1answer
228 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 ...
2
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1answer
150 views

Why did our cactus die?

We had a cactus named eddy and he died, he had a stretched body with a sphere on top as a head and two little spheres attached to it like eyes. He looked like Echinocereus triglochidiatus but with ...
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2answers
206 views

What are these white spots on my cactus? Note: they are not cochineal bugs (as I know them)

I've had this cactus for about two years now, and this winter in began showing these white, flat dots that look like splattered paint. They can be scrapped off, but there's no sign of an insect or ...
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2answers
69 views

Can one have cacti and non-cactus plants in the same pot?

I have these 3 small cacti which are getting too big for their pot. I was thinking of replanting them together with this larger plant. Would that be possible to have cacti and a non-cactus plant ...
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1answer
41 views

Cactus identification

I live in a student house where one of my fellow housemates has a cactus. She's incredibly bad in caring for her plants and pretty much doesn't give any attention to them whatsoever. Though, she ...
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1answer
39 views

Cut-off cactus piece not showing signs of new roots, should I plant it in the ground anyway?

around 3 weeks ago I've cut off the top of my healthy moon cactus with the hopes of successfully replanting it. I followed some online tutorials and left it out on a plate to dry, kept it out of any ...
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2answers
332 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
11k 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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1answer
1k views

What is this cactus and how should I take care for it?

I received my cactus as a gift approximately 10 years ago. I have never known what species of cactus it is and I thought it is time to figure it out. I am unfamiliar with cactus and I don't know if ...
2
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1answer
313 views

What type of gloves should be worn when dealing with cacti?

What type of gloves should be worn when dealing with cacti? Standard gardening gloves seem to offer little protection. Leather work gloves offer more protection, but end up attracting and collecting ...
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1answer
41 views

Which species of Cactus is this and can I eat the fruit?

This delicious plant is looking at me and asking me to eat it. May I do so? And how do I know if the fruit are ripe? And will I be enormously injured if I accidentally touch a needle?
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2answers
57 views

What is this white tuber on my cactus?

Yesterday I noticed that my cactus had a white tuber type thing growing out of it. Is this normal? It's almost doubled in length in the past 36 hours.
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1answer
156 views

Cactus turning yellow and shriveling from bottom to top

I have a cactus that turning yellow and shriveling from bottom to top, as Following pictures: The cactus age is about 20 years old. What is the problem? What should I do?
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1answer
74 views

Cactus looks weird

Hello, my cactus is turning brown and whiteish at the base. It is not exactly softer at the base compared to the rest of the cactus. Not sure if this is root rot or something else. Does anyone have ...
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1answer
70 views

Help identifying this weird cactus

got this cactus from a roadside seller. Didn't catch the name, and having trouble finding it online. The needles are very flexible and paper-like. Let me know if you have any info!
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2answers
69 views

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?? ...
2
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1answer
150 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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2answers
133 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
783 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
61 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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2answers
914 views

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?
2
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1answer
48 views

Cacti turning brown at bottom

I have had both these mini cacti for a bit more than a year, and both are having different kinds of brown discoloration at the bottom. The first cacti has a yellow-brown-greenish discoloration at the ...
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1answer
36 views

Need help identifying this succulent (I think?)

My grandma had started growing this for me awhile back and passed away in January before I could get much info on it... any ideas?
2
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1answer
32 views

I need help identifying this cactus

I've had a bigger version of this cactus for 4 yrs now and it's about 1 meter high With very small scattered spines and has bloomed 2 times with massive pale pink flowers that open once at night and i ...
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1answer
57 views

Prickly pear cactus needs help

Hi all, I recently moved into a rental with this mature, potted prickly pear out front. While it didn’t look great at move in, it has definitely gotten worse in the last couple of weeks, with more ...
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2answers
65 views

Do all desert cacti need a rest period?

Assuming a desert cactus could get all of its needs, light, heat, water... during the growing season met year round, does this cactus need a rest/dormancy period to remain healthy? Flowering does not ...
2
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1answer
286 views

Why is my cactus yellowing and dying?

My cactus has been grown from seed and has lived about five years. Over the past several months it has turned yellow- I read that it may be a case of root rot/overwatering so I’ve not watered it in ...
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1answer
127 views

Fairy castle cactus

My cactus has been suffering for 3 days, and now it look very sick. Could someone tell me the cause for which it looks like this and how I take care of him? Thank you very much!
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1answer
33 views

What’s up with my cactus

I’m new here but hoping for some help. Is he going to die, am I watering too much? I planted seeds around 1.5 years ago and I’m amazed how big he’s grown but recently he’s been turning yellowish ...
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1answer
51 views

How can I help out this cactus?

Unfortunately I don't know the name of this cactus, How do I get rid of these little white things that is like a spider web? she is dying :(
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1answer
816 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....