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My Nana passed away a few years ago and she left me 4 desert roses and I love them. I have never been good with plants but I have been proud that I have not killed them. I have even repotted them once and saved one from root rot. The other day I noticed that the largest one has developed a brown spot on the caudex. The caudex isn't soft but this spot wasn't there last week. What should I do? Thank you!

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Stop watering them. As the name suggests they are "Desert" roses. Water is scarce in deserts. Adenium needs more sunshine. Report it mud and sand combo and water them once over 2 or 3 weeks. Wash the rotten part with dilute hydrogen peroxide (≈12% conc.) to clear of the rot.

If you want to propagate this plant, you can cut one or several of those branches above. Take about 15cm of cuttings and stick them in wet soil. Water it just once and refrain watering them again at all, cover the cutting with a transparent container to create a humid greenhouse around it. You can use rooting powders and hormones to improve your chances with them cuttings.

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  • What are the indications of rot? The discolored area?
    – MackM
    Apr 2 at 15:59
  • @MackM Not the brownish yellow blotch/ spot, but the lower droopy and black leaves and the blackish brown spot near the cracked stem
    – Jayparth
    Apr 3 at 15:46

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