Hi, i did reply and say thank you also asking for 16 down but ive checked the forum and my comments never went. I think its when I send them from my mobile. They must vanish into the ether. Anyway, Ive just looked again at the clue and decided its surgical? However, I asked if 18 down was catnip, that's what I put but can't parse, the clue was Two nails (one's short) picked up in plant