fertiliser, different types, different growth periods.

[headbanger333]

Hello all, I am totally ignorant of forums and their machinations. I am an enthusiastic hobbyist living in Auckland, New Zealand. I made a basic error when I started collecting orchids 15 months ago and bought many different types (16) and, of course, it wasn't long before I realised they all required different care and conditions. I have nitrogen food and flowering food but do not know for sure when to apply and to which plant. Surely there must be certain signs that each type of orchid displays to tell me who needs what? I am totally involved with them and, like everyone else, I want to provide excellent care to get the best results. I would be grateful for a Dummies course in fertilising. Thanku