Dose any body know how i can rid of black flies on my rose&dalia flowerplants gratitude? i have roses &dalia flower plants and cant get rid of black...

i have roses &dalia flower plants and cant get rid of black flees can any body serve
Under deck?
Answers:    You can rub them off with your fingers, spray next to soap solution, or use insecticides, (organic or synthetic).
It depends how "green" or messy you want to get.
Can Psoralea Corylifolia seed be eat??
Try spraying them with dampen & a small amount of washing up liquid mixed contained by, it worked on my roses & the Aphids.
Hope it works for you. go to walmart and ask the people within the garden section