Greenhouse: Stubborn Whiteflies, 1 by nautical99

nautical99 wrote:
I have had minor problems with whiteflies in the past, but this summer has been really bad.

What seems strange to me is the plants that are infested are all outside. Mainly Plumeria's and Red Leaf Hibiscus.

I have kept them under control with Neem Oil in the GH and that has worked fairly well. But now that summer is here and the plants are outside it seems to have little effect at all. I have sprayed on a 6-7 day cycle and it seems to help, but within a few days that are just as bad as ever.

I had purchased a product online called Talstar. The active ingredient is Bifenthrin. (7.9%) It has not worked either.

Any suggestions would be greatly appreciated.

Thanks,
Nautical