Questions tagged [cactus]

Member of the family Cactaceae. Desert succulents.

24 questions with no upvoted or accepted answers
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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 ...
4
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0answers
194 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 ...
4
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0answers
1k views

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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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? ...
3
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1answer
443 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 ...
3
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0answers
375 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 ...
3
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0answers
593 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?
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?
2
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0answers
43 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 ...
2
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0answers
27 views

Yellow spots on cactus, brown spines

I have a cactus in which some yellow spots are appearing, some are starting to turn brown even. Then the spines seem to be dark brown on the top and white on the sides. Not sure if that's normal. I ...
2
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1answer
61 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
2
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0answers
170 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 ...
1
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1answer
26 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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0answers
32 views

Cactus id (Polaskia?)

I have a cactus here (9 cm tall), and I think it is Polaskia chichipe, however it might be P. chende as well. I don't know how to tell difference. It might as well not be Polaskia at all. Can someone ...
1
vote
1answer
34 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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0answers
88 views

Why is my cactus losing spikes?

So basically i recently got this cactus as a gift. (And is the 1st time owning one) i keep it in sunlight, water it ever 1-2 weeks depending on how dry the soil is, and i keep it in a pot with holes ...
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0answers
37 views

I don’t know what’s happening with my cacti it had brown spots on it and it happens a week ago I think

so I don’t know what’s wrong with my cacti
1
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2answers
52 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 ...
1
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0answers
64 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?
1
vote
2answers
175 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) ...
0
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1answer
29 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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0answers
21 views

Maintain cactus without soil?

I have several cacti plants (sabila), just like the one in the picture, and I have several cut wine bottles. I would like to place several of them around our balcony, but without using soil. My ...
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0answers
20 views

Epiphytic(?) Cactus Identification Needed

Epiphtye-like cactus Got it while picking up a Moonglow graptoveria at a local greenhouse. This sad little epiphytic guy looked way out of place among the golden barrel seedlings. Unfortunately there ...
0
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0answers
59 views

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?