3tbsporganic dish soapsoap will dissolve the waxing coat on aphids, dehydrating them without harming the plant
8oztap water
1tbspcooking oiloptional - this helps the solution stick better to the plants, making it more efficient at killing the aphids.
Instructions
Mix all ingredients in a spray bottle and give it a good shake.
Generously spray the plants on the affected areas and underside of leaves.
Leave on overnight.
Hose down the plants the next day, making sure the water flow won't damage the plant
Let the plants air dry.
Lightly mist the solution again after drying. You should see your plants getting back to a healthy green color within a few days up to a week (that is if they weren't already killed by aphids before the treatment was applied)
Note: you may need to repeat the process if you're fighting a big infestation! Just check your plants regularly and repeat at the first sign of infestation.