Other than some distortion of the foliage, aphids have very little impact on established shrubs. Use the hose with a strong stream of water first - that will get rid of the bulk of them. Then if necessary, you can follow up with an insecticidal soap.

Aphids tend to be the desired prey of a lot of beneficial insects so very little need to do much. Nature has a way of dealing with them very effectively. They also tend to be rather seasonal in their appearance, preferring succulent, new spring growth.

plagues of bugs.. come and go.. over the decades ...

it is hard to believe that these could do much damage.. on a plant that is considered invasive in many areas of the county ...

i think what gal meant to say in the second paragraph ... is that water is fine to control a population .. but you dont want or need to go toxic on the hunt.. to avoid killing the good bugs in killing a bug that isnt all that big a deal ... yes gal???

tending roses for their own purpose.. when taken to the extreme .. involves.. not unlike orchard programs.. a continual cycle of sprays and fert for highest performance .... so done that way .. spreading to them would not be an issue ...

also.. it is not uncommon that there is some population explosion on one plant in the garden.. and that is it... it would be out of the ordinary.. for all of a sudden. your whole yard is infested ... we would usually ask.. what has stressed that particular plant.. such that the bugs invaded that one ...

and if your a newb.. let me offer this .. bugs are part of the garden .. and rarely kill a plant ... maybe only make them ugly for a year .. but if you accept this as part of the garden.. then just watch and learn ... its all part of the same microcosm ... that is either brilliant wisdom.. or my justification to be lazy in the garden .. lol ...

ken

ps: and eventually.. get rid of burning bushes ... sooner or later.. you will find something better ...

and pps: plz hide your pruners ... there is rarely.. if ever.. a reason to go cutting on a plant in a preventative manner ... if some part dies.. remove.. otherwise... leave it alone.. until some part dies.. or you decide to kill it ... wisdom??.. or lazy .. lol ..

I used to squish them on rose buds. They didn't come back, didn't like living with dead sisters? I'm sure I didn't get them all. Perhaps dead aphid smell attracted predators? Bug spray was a thing at the time, no way I was going to put bugs in my blender!

With regard to the roses, it is my understanding that specific species of aphids, like many insects, tend to eat certain specific species of plants. So I would be surprised to see the same aphids from the Euonymus/burning bush also on roses.