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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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Is my rainbow cactus able to be saved

My rainbow cactus has fallen over and broken. Can the top part that broken bit able to be replanted?
morgan d's user avatar
3 votes
1 answer
129 views

Is my fairy castle cactus infected with a fungus?

The cactus was a vibrant green when bought and has been slowly turning brown over time. It's only watered when the soil is dry, about 2-3 weeks apart. The soil drains quick. More or less water doesn't ...
Jugo's user avatar
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2 votes
1 answer
88 views

Can my cactus that broke from its roots be saved?

While trying to stabilize my cactus, I accidentally caused it to fall a few inches, and it broke off from the roots. The roots are quite tiny. I suspect that this is because our apartment is ...
Sofía's user avatar
  • 123
1 vote
1 answer
39 views

Help with desert garden plant identification [closed]

I recently purchased a property in southern NM. Previous owner was an avid gardener that let it go in recent years (maybe decades?) so it's going to take a lot of work to look nice again. I am not ...
Jeremy Holovacs's user avatar
2 votes
0 answers
18 views

Purple blisters on my opuntia cactus, need advice

I've had my cactus for a couple years now and it's been doing fine up until a couple weeks ago. It started producing these strange purple blisters where the fuzz comes out. I've been searching ...
Nora Tiger's user avatar
2 votes
0 answers
13 views

Is my pet cactus starting to rot? [duplicate]

I have a mini cactus named Ludwig and last Wednesday I repotted him. His rots look healthy, no signs of bugs. And last time I watered him was days before repotting. He is growing his four stems, but ...
James Pietersz's user avatar
2 votes
2 answers
110 views

What are these brown spots on my cactus? Are they normal or?

My cactus has these brown spots that are spreading and I’m not sure what they are? I’ve tried adjusting sunlight exposure and how much I water but it doesn’t seem to have changed anything. Some of the ...
Kate's user avatar
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2 votes
0 answers
28 views

What window should I grow my San Pedro Cactus?

I have a baby San Pedro cactus and I'm wondering if I can grow it indoors in a west facing window. I live in the UK and the cactus seems healthy, it's only about 5-6 inches tall.
Twurti's user avatar
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1 vote
0 answers
20 views

Please identify this flowering Pyrrhocactus

This is a plant I got many years ago as a seedling, and it is labelled "Pyrrhocactus spec." - What species is it?
suppe's user avatar
  • 11
1 vote
0 answers
18 views

Easter Lily Cactus With Orange Spots? [duplicate]

I've had this easter lily cactus for about 5-6 years and it's doing good and even produced baby cactuses that I propagated but its got these orange spots on one side of it and not the other and it's ...
Twurti's user avatar
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1 vote
0 answers
40 views

Is my rice cactus healthy?

I've had this rice cactus for a few years but lately one of its main "branches" has been falling over. I'm not sure if this is normal for this plant to do or not. And I just want to know if ...
Twurti's user avatar
  • 141
2 votes
1 answer
42 views

Can anyone identify this mushroom?

I've had this cactus for over a decade. About a month ago I gave it some more soil. Tonight I noticed this mushroom growing next to it/ almost on it. I plucked it because it doesn't go there. Do I ...
Lady Gotham's user avatar
1 vote
0 answers
17 views

Cactus brown root

I have this 3 year old cactus and recently discovered that his bottom is brown. The thing is, the brown part is very hard and I heard that in order to be rotten it should be soft? I have no idea what ...
Giulia's user avatar
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3 votes
1 answer
160 views

Cactus decoloring and white-ish lines

Cactus became to decolor recently, mostly near the roots (not the yellow-green parts, talking about white-green-ish parts). They are not mushy, or hard as all normal green parts. Also, on the over ...
Alex's user avatar
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2 votes
2 answers
54 views

Cactus problem with discolouration

Our 7ft high cactus has started to develop these brown patches & are definitely spreading. It’s located in a conservatory which is quite sunny but not direct & has been there for a number of ...
Gary Gibbens's user avatar
2 votes
0 answers
23 views

How to get rid of snails on my outdoor potted cacti?

In this past week I found two really tiny snails on two of my potted cacti and have noticed some small damaged areas on others I live in Southern California which has an arid sunny climate, but we are ...
Nate Lockwood's user avatar
6 votes
0 answers
27 views

Should I give water to my melocactus in winter?

I live in Riverside, California, USA, an arid environment, and have two melocactus plants: azureus & matazanus. Reading tips on their care I find that they are 'winter dormant' and water should ...
Nate Lockwood's user avatar
1 vote
0 answers
26 views

Help Identifying my cactus

He seems to grow with others, has white areoles with tiny, but harmless spikes. He's around 2-3 inches tall, but is getting a little bigger every few months. I have closer up pictures, but they won't ...
Ashton's user avatar
  • 11
1 vote
1 answer
90 views

How to interpret maximum and minimum temperature for succulents

In the last few months I have acquired a few potted cacti and a couple of succulents that, according to care sites should be kept inside if temperatures get lower than 40 or 50 degrees F ( 4 to 10 ...
Nate Lockwood's user avatar
3 votes
1 answer
107 views

Cactus / succulent has holes at the base

I was changing the pot that I noticed the part that was in dirt has holes, it is not wet or soft although I was overwatering it that’s why I wanted to change the soil I also think it doesn’t have ...
Mehrnoosh Sh's user avatar
2 votes
1 answer
197 views

Cactus turning yellow from the base

I was changing the pot that I noticed the part that was in dirt has changed colors, it is not wet or soft just different color
Mehrnoosh Sh's user avatar
1 vote
0 answers
10 views

Is it OK to repot a small echo Echinopsis uhascua (Red Torch Cactus) while flowering?

I purchased my plant on line receiving it about 10 days ago. It's been out of the sun acclimating to our hot climate since and one of three flower buds opened today. It is about 2 inches (5 cm) high;...
Nate Lockwood's user avatar
4 votes
5 answers
2k views

What to do if too many seedlings are in the same pot?

I have attempted to grow cacti from seeds I collected from my own cactus. Since the last time I tried this (last year), only about 5 seeds started germination and then quickly died, this time I ...
jng224's user avatar
  • 143
2 votes
2 answers
195 views

Identify night blooming cactus

The following plant lives in a pot, outside at a veranda, in southern Greece. It blooms every year during the night, usually early in the summer. The flowers are strongly fragrant and stay open only ...
J. Doe's user avatar
  • 73
3 votes
0 answers
76 views

Why is my cactus purple at the bottom?

I recently got this cactus and I noticed that the bottom is purple. Should I be worried? Is there anything I can do about it?
gtp's user avatar
  • 31
2 votes
2 answers
57 views

Identify this cactus I received as a gift

I got this cactus as a gift. Please help me identify it. It's pretty weird. It's like they've glued some glitter on a plant :) Here's a photo of a dead leaf: edit: I was able to peel off the ...
Mahdi's user avatar
  • 149
2 votes
1 answer
2k views

How do I plant the arms of a fallen saguaro cactus?

I have a 32' tall Saguaro cactus in my backyard that fell down 1 week ago. I was hoping to save and replant some of the undamaged arms that are still attached to the main trunk. The arms range in ...
Steven Schwartz's user avatar
2 votes
1 answer
167 views

Orange mould in cactus soil?

I’ve noticed some orange-ish spots in the soil of my cactus plants which I am guessing is mould? I’m new to owning plants so I don’t really know what I’m supposed to do in terms of treating and ...
ryuu 's user avatar
  • 21
1 vote
0 answers
30 views

What other cactus can I plant in the same box with my FairyCastle Cactus?

I’m planning on planting my fairy cactus in a new box but I’d like to also plant a second cactus with it, I really want to get a lady finger cactus but I don’t know what cacti are plantable next to my ...
Daisy's user avatar
  • 11
1 vote
2 answers
482 views

What is this on my false Christmas cactus?

Well, I've been trying to figure out what this strange white cotton, fungus looking thing is, it seems to be a part of the dirt maybe? and I've been looking at some posts but I don't know myself if ...
Mia's user avatar
  • 11
3 votes
2 answers
532 views

What is this white stuff on my cactus and how do I get rid of it?

What is this white stuff on my cactus and how do I get rid of it?
Kim's user avatar
  • 31
4 votes
0 answers
28 views

Cactus tip breakdown

I just bought a trichocereus top cut from a distant source in Australia’s. Arrived looking in a good state and is happily rooting (arrives with a single root, now 6); haven’t watered as yet. Noticed ...
Jez's user avatar
  • 41
5 votes
1 answer
79 views

Indoor cactus during winter - switch growing/dormant seasons?

I have a small decorative cactus (exact species unknown, but I'll attach a picture) and one west-facing window next to both the air conditioner and the heater. I have no other windows. I have no ...
Will's user avatar
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4 votes
0 answers
360 views

Why does my cactus have a bald spot? And any idea what type of cacti this is?

Cacti, unsure what type... balding in one spot but rest of hairs seem healthy, any idea why?
Chloe's user avatar
  • 41
4 votes
0 answers
51 views

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?
Louise Millar's user avatar
0 votes
1 answer
51 views

Green cactus identification

What is the name of this cactus? I'm planning to replant it and want to do it properly accordingly to its species.
megasplash's user avatar
4 votes
0 answers
155 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. Update: You are right, the growth was a flower. And it ...
Nathuriga Sevvel's user avatar
4 votes
0 answers
139 views

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 ...
Bryan Hanson's user avatar
3 votes
0 answers
72 views

What’s wrong with my cactus?

My cactus has been like this with cracked skin for months, I then noticed it had aphids and removed them with soap and water for one week and they went away, and just today I noticed these brown spots ...
Hope's user avatar
  • 31
0 votes
1 answer
40 views

care for a thinning cactus

My cactus is growing very thin. I was left unattended for a month without sun and water. What should i do to bring it back to the way it was?
Shannon's user avatar
  • 11
1 vote
1 answer
78 views

My cactus is growing very thin

[![]my cactus is growivery thing. It was left unattended for a month without proper sunlight or water. I want to know how i can save it. Please help me. Sharing some pictures below.2]2 It used to look ...
Shannon's user avatar
  • 11
1 vote
0 answers
593 views

How to get get pups or divide this overgrown aloe vera plant?

I have a very large aloe vera plant. I cannot see any pups/babies. Is there a way I can divide it into more pots, either so the original isn't as big or just just to have more aloe vera plants? It's ...
selfishshrimp's user avatar
4 votes
1 answer
58 views

Can I revive my poor cactus?

My poor cactus was under-watered and I accidentally left it outside during the Big Southern Freeze in February. I had forgotten all about it when I was freezing my butt off in my house. I feel awful ...
BSM's user avatar
  • 43
0 votes
1 answer
91 views

Is this cactus being overwatered, underwatered or ill?

Can anyone please tell me what’s up my with my cactus? Is it being underwatered, overwatered or disease? Or could it be cold? Thank you very much!
Fnoptic's user avatar
2 votes
1 answer
581 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 ...
Emma Johnson's user avatar
1 vote
0 answers
141 views

What to do about the Collapsed Branch on my Cactus (possibly Austrocylindropuntia subulata)

I have what an app has identified as Austrocylindropuntia subulata. I've had it for about 25 years, although my mum has always looked after it. It's grown from about an inch high to almost six feet ...
tgt's user avatar
  • 111
2 votes
2 answers
15k 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 ...
andropaxus's user avatar
1 vote
0 answers
37 views

Cactus dying from insufficient light?

I left the country for two and a half months and left my cactus in the care of a friend. When I came back, apparently he had been leaving it under a desk lamp and not by the window to get enough ...
Ryan's user avatar
  • 331
1 vote
1 answer
240 views

Should I re-pot my cacti if they're starting to touch each other?

I have 4 spiny cacti in one flowerpot and after few years one of them is starting to grow more side-wards and getting closer to the other cacti (spines are already touching). I'm just wondering if it'...
Anastasija Kivleniece's user avatar
3 votes
0 answers
28 views

Cactus(Astrophytum) seedlings weather requirements

I live in Kerala, India, where the weather is humid dry. The temperature ranges from around 26 at night to 33 on daytime. My Astrohpytum seedlings are growing. They're 1.5 months old now. My questions ...
Govind Krishnan's user avatar

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