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Cacti & Succulents
chad19

Mealy Question

8 years ago
last modified: 8 years ago

I am working on cleaning up my succulents and finding them their winter homes right now. When checking over one of my new plants, crassula perfoliata I saw a mealy bug poking out from between the leaves.
After a never ending mealy battle a few years back I don't mess around when I see one of these monsters anymore. Usually this means a bath in melathion but being a crassula that would mean almost certain death.I'm curious if anyone has any idea what tempurature would kill mealys? From what I read the plant should be okay to -4C, so its outside tonight for an expected -5C.
Is this even worth a shot or am I just better off taking my chances with the poison?

Featured Answer
  • 8 years ago
    last modified: 8 years ago

    On a tough case of mealies, I use Bayer 3-in-1 or Bayer Tree and Shrub as a drench. It has imidacloprid as the active ingredient. I do not spray my succulents with Bayer, only use it as a drench. A couple of members have said they use it as a preventative when bringing in plants for the winter. I have not done this, as my plants stay out all year long.

    This has worked well for me, but some plants may not like it. My poinsettias, for example, are finally clean with no mealies, but the new growth leaves were mottled looking. I just pruned the second time, so I'll see if the new leaves look normal. I did go a little overboard since these plants were heavily infested after Hurricane Irma.

    This is a detailed discussion on Insecticide/Pesticide Insight. There's a lot of good information in this thread, although it is a bit lengthy.

    EDIT - I just wanted to add that I believe Bayer sold the above products and no longer produce them. I really just wanted to mention that I had used the imidacloprid successfully.

    Comments (6)

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