New Cactus Cutting Issues
Thanks for replying in response to my email request. The subject cactus, which I was told by its owner Tyler is Trichocereus pacnoi monstrose. It has this callous on the cut end but it also has some yellowish spotting that I am concerned may be a virus. Tyler bought this specimen, along with a bridgesii cutting on eBay, and the first pic shows the plants right after they were unpacked. The other pics are closeups of the cactus of concern. Please reply to me and Tyler as to what actions need to be taken to try to salvage both plants, if that is possible. Thanks so much for responding to my request in a timely manner. Tyler just recently got involved with cactus growing and reached out to Texas A&M Extension to get help with his cacti. I was asked, as a Master Gardener, to try to help him, and I decided to reach out to some cactus experts so I do not send him off in the wrong direction.
I don’t think there is any virus. I think the cactus is just less than perfect, which cactus often are. It may be some active fungus or rot from the shipping process. You can spray with an organic fungicide like Neem Oil or use a systemic like Infuse if you are worried. After you plant it in fresh fast-draining cactus soil and wait 2 weeks to water, if you see any spots start to grow then you might have an issue. If the spots have rings then it might be a virus. But I don’t see anything like that now.
Species name is Echinopsis pachanoi fa. monstrose.