This is the one thing I have never found any thing really organic that works against. The closest thing to organic that will get rid of them are pyrethrines. Extracts from a plant, or sometimes produced artificially. Pyrethrines are toxic but breaks down very fast in sunlight or just left on the leafs. No traces of this stuff will be left in the soil or in the plant.

As a follow up to my original posting.....

The leafhopper swarm has now abated. There are one or two left hanging around but nothing I can't live with. I have never seen that many leafhoppers before. And I found that those little devils bite too. My legs were covered with probably 100 bites from being out in shorts for about 1 hour.

The soap spray was working but I had to make it really soapy. I think it was just that the shear number of them was the problem.

Now my roses can start to recover somewhat.

My problem was that the grown leafhoppers just went away for a while and came back when the plant had dried. Perhaps I did't make the soap solution strong enough or I have a varity of leafhoppers that don't mind a soapy shower now and then. The infant leafhoppers survied the soap spray too.