(You won't find the quote below in this thread (it's from NOIDS and NICKNAMES), but to continue this discussion there is inappropriate.)
Roosterlorn said: I once lowered my pH down to 6.5 with good intentions because that's where it should be for most lilies. But in doing so, it made too much nutrition available and I ended up with some burned lilies.
I am very intrigued by your conclusion, Lorn. The pH change must have been quite drastic. Hmmm. Do you mean toxicity of certain heavy metals? Even that's difficult, unless the area was overdone to begin with. The copper from your frequent(?) fungicidal use? What did you acidify with? Maybe that was the culprit. How did you deduce that an overabundance of nutrients was the cause? And what was your solution?
Oh my, there's lots more questions...
