A gal in FL. has a YouTube channel and many of her plants are tree mounted or hanging in other areas. Says she's also had success with Orthene, done regularly. But it must have negative effects on wildlife,fliers or ground dwellers alike. Love my orchids and envy those who can put them outside but I'd worry about chemicals such as this.
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Wise men speak because they have something to say. Fools because they have to say something. Plato