Glad I could share that info with you, where it can be put to good use. That's what I love about permaculture- no matter how times you use information, it never wears out! Regarding herbal remedies, I have come across a theory of pest control that says don't try to wipe the pest out, otherwise it will become resistant- instead suppress it to a low level where it becomes less of a problem, thus avoiding resistance. Here in Australia we use tea tree oil to control disease in potting mix, based on this principle of suppression.
"A society grows great when old men plant trees whose shade they know they shall never sit beneath."