organic aphid killer?
I'm growing white vine for monarchs (which is fairly successful so far) and we've been controlling our aphid problem with a castille soap solution (Dr. Bronner's - 1 part soap/4 parts water in a spray bottle). I've been applying it to plants about once a week with a little burning but it's been fairly successful so far.
As of the past week or so, our aphid population has gone insane and if I spray more than twice a week, the plants burn pretty badly (even early early in the morning). We're working on our organic certification - castille soap has been approved for us - but what else can we use that kills mass amounts of aphids organically? Besides hard sprays of water of course!