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Questions About Cactus

  • Answered by
    drtreelove on
    October 2, 2018
  • Answered by
    drtreelove on
    October 2, 2018
    A.

    Well that's not much information for us to go on. The reason for decline could be from too wet, too dry, soil doesn't drain well. There are fungus diseases that affect cacti, and exposure to toxic material is possible.
    Here's an article that may help you to get the growing conditions right. Pay particular attention to the soil and water requirements.

    Good luck, I hope it recovers.

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  • Answered by
    drtreelove on
    October 14, 2018
    A.

    Yes the spots appear to be fungal infections, possibly initiated with wounding. If it's a recent purchase maybe talk to the nursery. See the section on physical damage in this cactiguide:

    https://cactiguide.com/cactipests/

    https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/fungal-lesions-on-cactus.htm

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  • Answered by
    BushDoctor on
    October 29, 2018
    Certified Expert
    A.

    No, they will not likely grow back. This is usually caused by a lack of light. Almost all cacti need bright full sun. If they are not receiving this, then they will show signs of stress such as this. Move this to a brighter location, and give it a larger pot. This small pot is for decoration, and is not intended to be the final home of the cactus or, in most cases, is only eant to live for a very short period.

    This collection of articles will help you with cacti care: https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen

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  • Answered by
    BushDoctor on
    November 7, 2018
    Certified Expert
    A.

    I do not see any signs of bites, or being eaten but I do see the start of a fungal infection.

    That needs to be in a cactus soil, which is designed to dry out very fast. What it is in now will ALWAYS lead to an infection, 100% of the time. In fact, I have put many cactus in potting soil on purpose so that I could snap photos of the resulting infections to show how detrimental a heavy soil is on a cactus.

    Just be sure to get that into a lighter mix, and let it dry out completely between waterings. Ideally, it will get to the point where you only have to water once a month or so, and it will be thoroughly dry between waterings.

    You may also want to replace 1/4 of the water next time that you water with peroxide. This can help kill off the infection, but only after it is put into the correct soil.

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  • Answered by
    Downtoearthdigs on
    November 19, 2018
    A.

    We are located in the US, and we don't offer services such as seed, or plant sales. You may try an online nursery, or a local nursery.

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  • Answered by
    BushDoctor on
    December 21, 2018
    Certified Expert
    A.

    It appears to be following the light. The color of the light distorts the view some, but it seems that it is simply following the light, which is normal. Just make sure to rotate the container away from the light source and it will start to grow back the other way. This is called "phototropism" and is shown by almost all plants.

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  • Answered by
    drtreelove on
    December 26, 2018
    A.

    I believe the larger one is a "barrel cactus", but not sure which species/variety.
    https://en.wikipedia.org/wiki/Barrel_cactus

    The smaller one appears to be a 'grafted' cactus, with a "root stock" that appears to be of the genus Hylocereus, like the Costa Rica Nightblooming Cactus.

    https://worldofsucculents.com/what-are-grafted-cacti/

    You may be able to get more specific identification through searching this website:

    https://cactiguide.com/cactipests/

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