I have no concrete information, no detailed intense scientific data to support a whole lot of what my fertilizing regime does or doesn’t do. I just watch the reaction of my orchids. I watch to see that leaf growth is consistently good. My leaves should show improvement in terms of length and width. Are the number and size of flowers being maintained? These are the visual signs that I look for.
Most of my Phalaenopsis species knowledge comes from working part time for an importer/vendor who regularly acquired them. I was fortunate to be able to take home a few plants in lieu of my wages. I could see that overall, a lot of Phalaenopsis species seem to do better in a basket. What detailed scientific proof do I have, what numbers do I have to back up my opinion? Absolutely NONE! I simply just look at the results. Back from 1983 through the early 2,000’s I had two sons to raise, a house and garden to maintain, a wife, 2-3 cats, a job, family obligations etc. I just grew orchids for pure joy and pleasure.
Every year though in the NYC area at shows and club meetings I was able to meet and “pick the brains of” such people like Lecouffle, Jones & Scully, Krull-Smith, Fred Clarke, Alan Koch, H&R, etc. I asked how they grew things, what do they look for, and so on. I fondly remember all of these contacts and friends I have met.
Not a single thing I mention here is meant to be taken as gospel! They are just snippets of what I have learned over the 5 decades that I have been growing these “flowering weeds”.