Natale Posted August 27, 2012 Report Share Posted August 27, 2012 Hi guys, I have this cactus for 12 years, but when I was given to me it had already 10 years. Some pics: enjoy Cheers Natale. Quote Link to comment Share on other sites More sharing options...
Rodrigo Posted August 27, 2012 Report Share Posted August 27, 2012 Beautiful Cactus , Natale. Out of curiosity what the ID it? Best regards, Rodrigo Quote Link to comment Share on other sites More sharing options...
will9 Posted August 27, 2012 Report Share Posted August 27, 2012 It s a ferocactus,and a very nice one, Cheers Will Quote Link to comment Share on other sites More sharing options...
Natale Posted November 1, 2020 Author Report Share Posted November 1, 2020 Hi at all, I have a problem with my plant, this year it has this discoloration on two sectors and it seems to be fading, any idea on the type of problem? remedies? Many thank's   Quote Link to comment Share on other sites More sharing options...
Gaz Posted November 1, 2020 Report Share Posted November 1, 2020 Sorry to see your cactus problem, it was such a nice plant 8 years ago. I can't identify the exact problem but would ask if it had any big changes in how it has been kept recently, such as extreme sunlight, extreme cold, or changes to the watering regime? Has it been turned so that the "dark" side now faces South (towards the sun)? Quote Link to comment Share on other sites More sharing options...
Natale Posted November 2, 2020 Author Report Share Posted November 2, 2020 13 hours ago, Gaz said: Sorry to see your cactus problem, it was such a nice plant 8 years ago. I can't identify the exact problem but would ask if it had any big changes in how it has been kept recently, such as extreme sunlight, extreme cold, or changes to the watering regime? Has it been turned so that the "dark" side now faces South (towards the sun)? Hi Gary, the plant apart from the transfer that I had done in winter, I always kept it in the same place with the same care, the only thing that makes me doubt is that most likely I turned it on itself, so as you say ..... I hope only the lesser evil, a sunburn rather than an infection Many thank's for your reply Regards Natale Quote Link to comment Share on other sites More sharing options...
Gaz Posted November 2, 2020 Report Share Posted November 2, 2020 Hi Natale, yes let's hope it's "just" a sunburn, unsightly but not fatal.  Hope to see it again next year when in flower. Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 3, 2020 Report Share Posted November 3, 2020 Transfer? What does that means? Same as repot or as in move of location? Sorry about my bad English. In winter cactuses is best kept cold and bone dry. Yelowing or whitening is often signs of spider mites. Ongoing infection or former infection. Be Magnus    Quote Link to comment Share on other sites More sharing options...
Natale Posted November 4, 2020 Author Report Share Posted November 4, 2020 (edited) Hi at all, every opinion is welcome, we are in a forum and we are here to help us with our experiences, thank you all for this. Today I noticed some worsening, I think it really is an infection, if so please suggest me how to proceed, here are some photos unfortunately taken with the smartphone that accentuates the colors a little, note the orange spots. Waiting for opinions and solutions, thank you all. Regards Natale Edited November 4, 2020 by Natale Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 4, 2020 Report Share Posted November 4, 2020 Spider mites are indeed redish in colour. If you are in the northern hemisphere the cactus should be in dormancy kept too cold for the spider mites to be active. How do you keep the cactus? Environment and care? Br Magnus   Quote Link to comment Share on other sites More sharing options...
Natale Posted November 4, 2020 Author Report Share Posted November 4, 2020 (edited) Hi Magnus, I am in southern Italy, here the temperatures even in winter are very mild, the cactus was born and raised here, I have always kept it exposed to the south and always outside, no particular care, water every week sometimes with fertilizer, more often in spring and summer, nothing more. Could I do a treatment with some specific product? Edited November 4, 2020 by Natale Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 4, 2020 Report Share Posted November 4, 2020 What I do when i get spider mites is to get some predatory mites Phytoseiulus Persimilis to battle it. Very effecient but expensive. For one plant it might be a little too expensive, depending on how much you value your cactus.  There might be some systemic treatment (poison) that can treat it. But I am very concerned to keep all my produce organic, so have no experience there. The first thing you need is to make sure it is spider mites so you dond treat it wrong. Try to identify by using loupe or microscope. Look for the netting and look for the red dots, if they are mowing and campare to pictures online. Br Magnus   Quote Link to comment Share on other sites More sharing options...
Gaz Posted November 4, 2020 Report Share Posted November 4, 2020 The affected area looks a bit too localised for spider mites from my experience, is it really just 2 ribs or is that just how the photo was taken? Are the orange spots part of the surface or are they on the surface, i mean is it easily wiped off? I've used diatomaceous earth powder for mites in the past but it does get messy. Have you had a good look with a magnifying glass? Could orange spot be fungal? Quote Link to comment Share on other sites More sharing options...
Natale Posted November 4, 2020 Author Report Share Posted November 4, 2020 Hi Gary, The problem is only on two ribs of the plant, only on one side, the part is smooth discolored to the touch, this morning I tried to clean the orange stains with a little alcohol but they don't come off Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 4, 2020 Report Share Posted November 4, 2020 Indeed doesnt sounds like spider mites then. Br Magnus  Quote Link to comment Share on other sites More sharing options...
Gaz Posted November 4, 2020 Report Share Posted November 4, 2020 hi Natale, from what I've read on cactus forum could be mineral deficiency (maybe iron or manganese), possibly caused by incorrect ph of compost. Have you changed the type of fertiliser used this year? Do you use low nitrogen fertiliser? How long since the plant was last repotted?  Out of interest how does the grow point look, still healthy? Quote Link to comment Share on other sites More sharing options...
Natale Posted November 5, 2020 Author Report Share Posted November 5, 2020 Hi Gary, I repotted the plant in early spring, I put a base of expanded clay on the bottom, the soil a mixture of acid peat of sphagnum and universal soil mixed with expanded clay, I do not use a specific fertilizer for cacti but the generic one (ox blood or other), the plant again this year has bloomed a lot and has become taller like every year. This year I noticed a lot of ants on them that I got rid of. Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 5, 2020 Report Share Posted November 5, 2020 Sounds like a reaction to a much heavier soil. For now there are not much growing going on before spring. I would keep it as dry as possible until spring. In much of europe the fall har been much wetter than normal. Is that the case where you are as well? Quote Link to comment Share on other sites More sharing options...
Gaz Posted November 5, 2020 Report Share Posted November 5, 2020 I'd agree with Tropfrog's comments and also perhaps the oxblood is too rich in nitrogen. Maybe next year you could find a low nitrogen fertiliser but for now it should be kept dry, and cool until March or April.  Good luck, hope to see it in good health next year. Quote Link to comment Share on other sites More sharing options...
Natale Posted November 6, 2020 Author Report Share Posted November 6, 2020 Hi at all, Here it is not very humid, then I'm lucky because I have a single balcony completely south. I will use the fertilizer (ox blood) on other plants, it is a shame to throw it away, while the cactus I will leave it dry, it will feed only on the typical humidity of the winter of the house. Thanks a lot for your reply. Best Regards Natale Quote Link to comment Share on other sites More sharing options...
Tropfrog Posted November 6, 2020 Report Share Posted November 6, 2020 Do not feed until next summer. The New soil Most likelly have all it needs. Br Magnus 1 Quote Link to comment Share on other sites More sharing options...
Natale Posted July 7, 2022 Author Report Share Posted July 7, 2022 Hi at all, my "little" cactus seems to be fine, it keeps growing Quote Link to comment Share on other sites More sharing options...
pirks Posted July 10, 2022 Report Share Posted July 10, 2022 Not really little anymore is it and completely dwarfs the sarracenia pitchers in the foreground. Very nice plant Quote Link to comment Share on other sites More sharing options...
Natale Posted July 11, 2022 Author Report Share Posted July 11, 2022 8 hours ago, pirks said: Non è più così poco e fa impallidire completamente le brocche di sarracenia in primo piano. Pianta molto bella Hi, the title is "joking", this year is about 31 years of life for this plant. I hope it slows down its growth, I don't know how to deal with it anymore, the last time I had to repot it, it was really very complicated, the pot currently has a diameter of 80 cm Quote Link to comment Share on other sites More sharing options...
pirks Posted July 12, 2022 Report Share Posted July 12, 2022 80cm diameter is quite a large pot, how on earth did you manage to repot it without getting impaled with at least one of its spines. How did you manage to pick it up as it must be heavy Quote Link to comment Share on other sites More sharing options...
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