Question

Where is the good honey tree for Platinum?

Answer 1

All of them are the same, all of them have the same Pokemon in them, Aipom, Cherubi, Burmy, Heracross, Combee and Wurmple.

However, the four trees in the game that have Munchlax in them are random based on the Trainer ID and Secret ID. You can figure out two of them by putting your Trainer ID into this website.

Answer 2

There's no good or bad honey tree but munchlax only appears on four random trees for every game if I remember correctly.

How I use the honey tree is to go out and put honey on as many tree as I can and hope to find what I want.