But without a control, it's hard to know if the lily is just recovering on its own, or if the epsom salt is the cure.
Consequently, it will be hard to get a real feel for epsom salt's efficacy, but it will be interesting to get the general feeling of this group.
Lorn, do you remember where you got the quarter to half cup per gallon recommendation for soil application? Seems like an extra lot for a non-major nutrient, but I really don't know.
I might also expand on Lorn's mention that there can be many causes of chlorosis. Remember epsom salt is not epsom salts. It is only one chemical compond: magnesium sulphate (MgSO4). It will not, for instance, cure an iron deficiency, which is another common cause of chlorosis. In fact, chelated iron as a foliar spray or soil drench would be a good additions to any testing going on.
