magical9 Posted January 31, 2014 Can anyone tell me what this is on my T. Macrogonus? This showed up just over the last week. Preventable? Somthing im doing wrong? This is my first cactus issue! so im anxious to learn! Share this post Link to post Share on other sites
hostilis Posted January 31, 2014 Looks like you have some rot showing up to me. Was that a cutting when you got it? Share this post Link to post Share on other sites
magical9 Posted January 31, 2014 Looks like you have some rot showing up to me. Was that a cutting when you got it? nope this was a 15$ potted T. macro from a local nursery. I admit i did water it once about 2 weeks ago but its totally dry soil now. it was dry within a day or two. could that be it? none of the other plants are showing this. so far. Share this post Link to post Share on other sites
Quixote Posted January 31, 2014 Is it just me, or does that look more like a Cuzcoensis than a Macrogonus? Share this post Link to post Share on other sites
hostilis Posted January 31, 2014 (edited) Is it squishy at all? If i were you I would stop any watering and keep an eye on it. And yeah quixote. It does have bleached spines like a cuzco, but I would have to see the tip of it to make a guess at it. Edited January 31, 2014 by hostilis Share this post Link to post Share on other sites
magical9 Posted January 31, 2014 its definitely distinct looking compared to my actual cuzco. it also doenst have the flared out central spines like a cuzco.are cuzco the only ones that produce white spines ? Share this post Link to post Share on other sites
hostilis Posted January 31, 2014 I don't think they're the only species that does that magical9. Share this post Link to post Share on other sites
magical9 Posted January 31, 2014 also no its not squishy that i noticed. i tried poking it this morning but it seemed firm still. is there anything you can do about soft rot? the soil is bone dry and the temps/rH are in teh 50-75f's and <30% rH Share this post Link to post Share on other sites
hostilis Posted February 1, 2014 I'm not sure what the best course of action is. I've only had it happen with small globular cacti and in that case I will stop watering, find a less humid spot for it, and dust with sulfur powder. That is pretty big though, so it'd take a ton of sulfur to dust it with. So IDK. Maybe some of the other trich growers can chime in on what they think it is. Share this post Link to post Share on other sites
zelly Posted February 1, 2014 If you want to save the plant you'll grab your xacto knife and start cutting the infected areas out immediately, even to the point of topping it completely if necessary and re-rooting. that, and you want to isolate it from the rest of your collection. 1 Share this post Link to post Share on other sites
AZS Posted February 1, 2014 I agree with zelly. top it - dry out the top and if the temps are warm enough in a few weeks try rooting it. isolate the base, keep it dry and put it out in stronger sunlight if the temps are warm enough. the extra light will give the cactus energy and stimulate its immune system - hopefully it will recover. this is more common in cool, humid conditions without enough sunlight. I see this problem a lot in greenhouse grown and store cacti Be sure to use a clean knife on the top-cut and cut well away from all that crud! Share this post Link to post Share on other sites
magical9 Posted February 4, 2014 hm right now its sitting in basically full sun. temps are around 40-50f at night and 70-80f durring the day, humidity hasnt been very high that i noticed, its usually super dry out here. it was grown outside in the same conditions like 10 miles away. im starting to see little discoloration dots on other cactus.. why is this happening in a dry well lit area. sucks, i hope i dont lose my juuls giant clones im rooting. one is developing a few dots that im worried might be the start of somthing bad. Share this post Link to post Share on other sites
Schrodinger's Khat Posted February 4, 2014 I think the cuzco/mac will need to be cut. If it is rot, it normally rots from the inner core and it could possibly be worse then what it seems. Even if you did cut it and you root the tip and the stump recovers then you have just doubled your money. Not sure about the dots you're describing, maybe some more photo's could help. Share this post Link to post Share on other sites
magical9 Posted February 4, 2014 So i took your advice and chopped it leaving a base and a tip for rooting. I first cut out the diseased part and it seemed like it didnt reach to the inner core but the gash/cut i left in order to cut it out was pretty big so i just opted to top it. Im excited to see it pup and to be able to root this top cut. Now ill have two offset sizes of these cacti for when i plant them in ground. Well 3 if you cant the base. Share this post Link to post Share on other sites
hostilis Posted February 4, 2014 That's good that it wasn't in the core. Can you take some pictures of the other spots you're talking about? Share this post Link to post Share on other sites
magical9 Posted February 4, 2014 ya ill try to remember tonight. so far the spots have not progressed like i saw the big diseased spot progress so i have hope its nothing serious. Share this post Link to post Share on other sites
magical9 Posted February 5, 2014 Here are some more pics of what i was sold as a T. Macrogonus. Do ya'll think its cuzco? I bought two, this is the one that i have not topped. SO far so good on disease. Share this post Link to post Share on other sites
magical9 Posted February 5, 2014 (edited) and here are some pics of my other cactus that show signs of weird growth signs, any idea? Pic 1 - 5 = Juuls Giant (3 different ones) Pic 6 - 7 = Cows Tongue Prickley Pear Pic 8 = T. Bridgesii - The black spots developed around some areolas which popped off really easilly revealing green flesh below which quickly turned black. QUESTION: Could my plants being poolside cause any humidity type issues? Edited February 5, 2014 by magical9 Share this post Link to post Share on other sites
Evil Genius Posted February 5, 2014 This is fungal. Separate them from the others asap. Not all of these Pics look like the infection is serious but the One on the pics in the first post is probably lost. Share this post Link to post Share on other sites
Quixote Posted February 5, 2014 If your plants are poolside, could it be that splashes of water with chlorine get on the cacti? Share this post Link to post Share on other sites
magical9 Posted February 5, 2014 This is fungal. Separate them from the others asap. Not all of these Pics look like the infection is serious but the One on the pics in the first post is probably lost. are you saying all these pics appear to show a fungal issue? or just the first post? is there somthing i can do to prevent it from spreading/getting worse besides separating everything? Ive already removed the cactus from the original post btw. If your plants are poolside, could it be that splashes of water with chlorine get on the cacti? nah they have only been there for 2.5 weeks and there has been no spashing in the pool. its like 40f water Share this post Link to post Share on other sites
mutant Posted February 6, 2014 first pic seems it might have a problem further down.. need pic.. looks like "black rot" http://www.shaman-australis.com/forum/index.php?showtopic=21263&hl=%2Bblack+%2Brot Share this post Link to post Share on other sites
hostilis Posted February 6, 2014 The pictures of the top portion of the macrogronus is just scaring. And a lot of the other plants looks like scaring to me that i've seen that posed no issue. I would just separate them and keep an eye on them for a while. As for the bridgesii. I get black spots on mine like that a lot. Usually not that big though. What is the temp range and have you been watering them? Share this post Link to post Share on other sites
Evil Genius Posted February 6, 2014 No, definately not all of them. Most of the Ones in Post 18 dont show anything that looks serious. Just scarring and stuff like that. The Pic three in Post 18 however, looks kinda weird. Could be the same kind of Infection you have in the One on the first pics. But when you have a fungal infection, it all starts with a very small spot so you need to watch all of them. And make sure there´s enough ventilation. Most of the Fungal Infections are caused by not enough fresh air and too low temperatures. 1 Share this post Link to post Share on other sites
mutant Posted February 6, 2014 hey dont scare the dude they're trichocereus ffs! he is in zone 9 and spring is coming sooner or later. I would only worry about the first one. the first cactus which indeed might be cuzco and not macro, looks like it might have the rot lower in the stem , got to show photo. you dont even need to put them seperately unless you got lots of fresh chopped up cuttings and stressed cacti with open wounds. DRY atmosphere, do not wet, do not water for a while... so yeah the poolside , and winter time , even if they're under a roof, it might get them unwantedwetness when a crisis is present. All in all trichocerei are tough buggers, dont worry... 1 Share this post Link to post Share on other sites
