Root hormone for Phal?

[Emerald27]

Hey everyone.

I'm wondering if there is a specific kind of root hormone to use for orchids (specifically a phal) or if you can use general root hormone used for other plants/trees. My dad has some he uses on his bonsai trees.

Is there a difference? If so, what brands are best to look for? I've read a few posts about using seaweed or kelp extracts to help stimulate root growth, is this a better option?

Thanks!