I'm getting very sceptical with age. I've seen many miracle growth enhancers come and go over the years. Still, at least coffee is a free supply if you have left over in the jug
You and me both . . .
I had just seen some phenomenal improvement in trays of seedlings and older plants -- especially highland Nepenthes -- by even skilled growers, who weren't starving their prized plants of anything, before I began this thread . . .