| Very good information, Andrew. Great post!!
The following is not in response to your post, but instead a couple of things I meant to say earlier.
There is a belief in horticulture that you can not over fertilize because the plant will just use what it needs and ignore the rest. I don't agree because you can poison the plants growth area and do considerable damage with too much fertilizer. Again...it's hard to relate this to a potted orchid if the medium is well flushed frequently. I just point it out for your consideration. Plants are not usually going to die from under fertilization, the opposite is not so obvious.
Additionally, the above appears to be untrue at least with nitrogen. Extra N will spur additional foliage growth. Anecdotal evidence (which I strongly believe in this case) is that this excess foliage growth is less resistant to disease, including fungal infection, than plants that do not get excess N. While I admit that I'm not much of a botanist, there are several reasons that this could be true. Observations from knowledgeable growers suggest that daylily plants getting a high N exposure are more likely to get a rust disease that is specific to daylilies. There are other observations as well. I can't prove it, but I do believe it (and I'm usually suspicious of anecdotal observations).  |