Well, looks like I handled the lemongrass wrong. I didn't pulverize it just shredded it. Almost no lemongrass flavor. Back to the drawing board.
I love the idea of Lemondrop hops except that I'm not sure how easy they would be to obtain in bulk. This is for a local organization (Huntsville Botanical Society) and they want to keep it on draft and in bottles so I'd have to have a contract for the hops or they would have to be plentiful on the spot market, but I will look into their availability. Thanks for the suggestion.