Syrinth..You'll know if they're whitefly by gently shaking the leaves..WF will take off, swirling around, then look for the nearest plant to land on. They could be Mealybugs. Mealys are slow-moving, totally opposite of WF, and can be squished easily enough.. It seems Mealy are attracted to Gynura..it's been several years, but my last two Gynuras got tossed because both had mealy. That's one bug I can't tolerate. Unless you have fruit sitting around, the tiny insects are probably Fungus Gnats. Are you allowing soil to dry between waterings? FG's thrive on wet soil and dry, stuffy air..perfect combos. When a plant with FG's gets watered, they appear, crawling up and along soil..they're dark in color, have silvery hues. Fruitflys are larger than FG's. One more thing..you said you've been catching them manually..because whitefly are so fast, you wouldn't be able to catch them..unless you had the tongue of a reptile..lol. Toni

It looks like it was sprayed, then water was still on the leaves when the sun hit it.

bump

It is probably at least partially my own fault since I left the milkweed plant there because they are a prime host plant for butterflies in my area. I would not leave a plant like that around that butterflies would lay their eggs on, and then spray it with anything that would kill the resulting caterpillar. I am certainly not 100% organic in my yard, but I do try to keep my veg. garden organic and not use anything too toxic on plants that I know attract birds, butterflies and bees. I like to try the least toxic methods first and apply when they are least likely to do harm. That said, I am not averse to a fungicide when necessary outside the veg. garden and whatever I need to do to save a plant that is being overwhelmed by insects as long as I avoid host plants and flowers. It seemed simplier to remove the milkweed. I think there is more growing in a back corner of the yard I need to tackle on vacation next week. If so, I will consider leaving them and spraying with something if it isn't harmful to catterpilars. Spraying daily with water to remove aphids until all the generations are gone is just a little more work than I am willing to put into a weed. :) Isn't there something organic that won't hurt bees and caterpillrs that will have some resiudal action? What about some of the safer products? Will the tomatoe leaf tea harm them? Sue