Hi all,
I was wondering if anyone else here has ever used a systemic pesticide during the Summer. I use Bonide Systemic granules. I sprinkle a teaspoon every 4-6 weeks on the potting media of each plant. As I water it is absorbed by the orchids. I have not seen any ants, spiders, slugs, Scale or white fly since... You can find it at Southern States Cooperatives or any Bonide retailer.
I also use a 70 percent isopropol alcohol mister for black spot and fungus infections, works great.