Mealy Bugs

Use this section to discuss matters relating to any and all issues involving horticultural pest and disease management. This is where one posts unknown pest/damage photos for ID help.

Re: Mealy Bugs

Post Number:#26  Postby Stone Jaguar » Sat Nov 25, 2017 9:20 pm

Obviously, a likely outcome in your case here. Just mentioning that some agaves can generate nasty stings all on their own.

Yes, I understand bark scorpions still kill plenty of rural N Mexican toddlers every year, hence ease of availability of MyN scorp antivenine at clinics throughout the country.
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Re: Mealy Bugs

Post Number:#27  Postby DesertDweller » Sat Nov 25, 2017 11:39 pm

Stone Jaguar wrote:Malathion is good for mealy control, bad for bees, fish, herps. I like using it, but smell freaks Joe Public out and makes it a no-no at home and shared greenhouse here.


Hmm. Just how bad a smell are we talking and how long does it persist? I've been tempted to try some before I'm away for a week or so, since I won't be able to quash any new mealy attacks until I return and don't want them going unchecked. Figured it was cheap insurance on the ones that I'm no 100% confident are clean yet, and probably preferable to asking my house sitter to mess with Sevin spray. :?
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Re: Mealy Bugs

Post Number:#28  Postby mcvansoest » Sun Nov 26, 2017 9:48 am

In the summer when I used it the smell persisted for about a day or so. It really depends on how heavily you apply it, my wife was not happy about it, so I only use it as a treatment not a preventative measure.
Ever since I got Malathion for a couple of cacti with mealy bugs I have realized that some of the big box stores must be frequent users for their plants as I started recognizing the not so pleasant smell that I often detected while perusing the selection of plants on offer.

Anybody have any experience with it for treating cochineal scale insects? It seems that my neighbor's colony is trying to expand from his Opuntia macrocentra to 3 species of chollas in my back yard. They tried establishing on my Opuntia santa-rita, but I managed to fight them off with frequent hose-downs of that plant, not so effective on the chollas (imbricata, versicolor, and fulgida). They have left all other chollas and prickly pears alone so far.
It is what it is!
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Re: Mealy Bugs

Post Number:#29  Postby Stone Jaguar » Sun Nov 26, 2017 6:05 pm

It is quite unfortunate that malathion has such a scandalous (and persistent) odor since it’s a very effective contact insecticide and has relatively toxicity for mammals. I can imagine close neighbors raising the roof if one gives the garden a good spray with it. As I mentioned earlier in this thread, malathion + Enstar is great stuff if you’ve got a persistent outbreak of scale and/or mealies.

J
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