Questions tagged [cactus]

Member of the family Cactaceae. Desert succulents.

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1answer
108 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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3answers
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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
32 views

Part of cactus turned brown and shriveled

I've had a cactus since December, which is placed next to a Northern facing window. I've only watered it a handful of times since then. It has a small piece near the top which about 2 weeks ago turned ...
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1answer
43 views

How much soil needed for cactus maintenance?

I have several sabila cactuses that look like the picture below. I was considering filling up a cut wine bottle like this with soil and using it as a pot for the cactus. Is this possible or do they ...
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3answers
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How long can plants survive without light?

For context I'm moving house and shipping most of my stuff. Shipping is expected to take 1-2 weeks. I want to know if shipping my house plants is worth considering. I have a bunch of cacti and ...
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Pollinating dragon fruit in broad daylight

Most tutorials on pollinating dragon fruit say that the flower will open past midnight. They suggest to go out with a flashlight and use a paintbrush to pollinate it. If I don’t want to screw up my ...
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2answers
24k views

Why is my cactus droopy?

I have a cactus (pictured) which I bought about a month or so ago. It has been slowly drooping, although the tag said to keep it dry in winter and I have only watered it once when I re-potted it. The ...
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1answer
25 views

Back to basics - nutrients and growth

I have started out my journey of growing things with strawberries and cacti. But I feel I miss some of the basics of how the growth cycle works. So I have a few questions. First of all, the plants ...
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2answers
88 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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Why is my cactus turning brown and getting crusty stuff on it?

[![brown base getting bigger ][1]][1]browning cactus- crusty near crown I have had these for about 5 or so years. I noticed the brown near the bottom for quite some time but thought it was normal. ...
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What are these yellow spots on my Melocactus concinnus?

I purchased this Melocactus concinnus online a couple of months ago. I don't remember seeing those yellow spots on the bottom half of the cactus. It's possible, however, that I just didn't pay close ...
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1answer
45 views

What are these yellow splotches on some Christmas Cacti (Schlumbergera) I rescued? Are they a positive or negative sign?

A few weeks back — on a fairly windy night here in New York City — I was going out to toss out the trash when someone’s small pot of Christmas Cacti (Schlumbergera) crashed down on the ground right ...
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30 views

What’s wrong with my cacti

My cacti look very ill, and I don’t understand what I am doing wrong and what’s going on. Could someone please help me with advice of what to do?
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1answer
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35+ year old cactus turning yellow

Hello fellow plant lovers! I've adopted this beautiful 35+ year old cactus from a friend moving across the country, however I'm concerned with the yellowing you see here in the pictures. The ...
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1answer
30 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?
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2answers
7k views

White and brown spots on cacti

I've been away for the last two and a half weeks, and upon return I noticed a few of my cacti had developed white fuzzy spots, which were not there before. In the worst instance, one cactus appears ...
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1answer
54 views

Why is my cactus’ arms growing skinny like this?

The arms of my cactus are growing skinnier and I don’t know how to make it grow and appear like the original arm (lower part of the arm). It’s skinnier and has a lighter green color than the loser ...
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3answers
15k 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 ...
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27 views

What’s going on with my cactus

My cactus has started to to yellow, it was left in the greenhouse over winter in its normal
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1answer
40 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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1answer
28 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
46 views

Prickly pear wilting after being in the sun

my prickly pear has been doing great, until this morning I put it outside in direct sun and within a few hours the new baby on the top started to lean. I also watered it the same day. Any ideas as to ...
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1answer
611 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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White spot on cactus? Can someone help identify and find a fix?

I’ve had this problem for a little while, maybe a month? I haven’t noticed any spraying but I am worried about his health over all. He’s indoor and was in natural light when this began and is now ...
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2answers
85 views

Huge fungi in the cactus pot

A year ago or so, my cactus started developing yellow spots all over and was diagnosed with a fungal infection. As instructed, I got an antifungal spray (copper-based) and was spraying it once a week ...
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2answers
46 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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Deteriorating Cactus

My cactus is showing signs which might be detrimental to its health. This is an image of the cactus The base of the cactus has a white coloration but is still firm( I don't think its a sign of rot) ...
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Please help me identify my cactus

Please help me identify my cactus :) It is about 20 years old at about 3 feet tall. It has 6-7 ribs near the top that fill out towards the middle and bottom. Here are some more closeup pictures ...
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29 views

Can someone help me diagnose what is wrong with my cactus and how do I treat it?

Does anyone know what is happening to my cactus. It was a beautiful specimen when I got it and was fine for a year or so, but then it gradually started with the browning and weird skin disease. It ...
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My cactus is suddenly becoming white and shrinking

Can anyone suggest what could be the problem. I am keeping this in under a shed and watering when the top of the soil is dry. Is it a bug or rot root problem ? !
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1answer
34 views

Help with Arizona cacti

Hey everyone! I’ve recently been placed in charge of caring for this Arizona native cacti. A friend of mine is travelling abroad for 8 months and I want to take good care of this little guy while she’...
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3answers
127 views

Scale like skin on indoor dragonfruit plant. Help!

I’m a little concerned about my dragonfruit plant (at least I think that’s what it is-bought it as a “cactus”). It has always had a little of this scaling, but it has gotten worse recently. I’m just ...
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1answer
40 views

Austrocylindropuntia subulata breaking off

I've had this one for about 3-4 years - found a piece of if on the ground broken off from the big plant and potted it, and it kept growing since (in the same pot all this time). Few days ago, one of ...
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1answer
40 views

Cactus with pink spines at top?

Received this cactus and couldn't find it online what cactus this is. Care tips would be nice. Location: New Delhi Pot size is 4"
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Cactus with white feathery spines?

Is this some variety of feather cactus or it is Old Lady Cactus?
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2answers
45 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
48 views

What exactly is a gritty mix for succulents?

I have seen very few gardeners (online) use gritty mix for succulents. Here are two of them: Gritty Mix another different gritty mix Both of them talk about gritty mix and to me gritty mix makes ...
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1answer
388 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?
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1answer
63 views

Monkey Tail Cactus Burned under lights do I have to move it?

My Monkey Tail Cactus hangs down really low, so I have to raise it up to keep it from touching the ground. When I raise it up it gets closer to the grow light. The last time I raised it up I burned ...
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1answer
63 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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3answers
637 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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2answers
130 views

Gritty mix for cactus and succulents usage

I am seeing some gritty mixes for succulents and I cannot find any info on the product regarding it usage.. Will succulents or cactus do well if they are placed in those gritty mixes? Here are gritty ...
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3answers
4k 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 ...
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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 ...
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3answers
91 views

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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2answers
280 views

Cacti red/white discoloration

I’m growing these cacti for about 9months i just changed their soil and pot, while i was picking up the little babies is realised that some of them changed color to red (meaning too much sun i guess) ...
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3answers
3k views

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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2answers
35 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 ...
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2answers
243 views

Is my cactus being under watered?

I’ve had my cactus for over a year now. I bought it late winter/early spring (February/March?) and from the time I bought it to around a month ago it had very stunted growth and didn’t grow any new ...
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1answer
68 views

What type of cacti is this?

I would like to know what variety of cactus this is. It has grown three times its height since I bought it and although I have looked on many websites, I just cannot seem to find anything like it.

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