These will probably be pretty easy to re-code.
The textures will need changing for the new way fast/fancy graphics are rendered (like leaves).
Item drops will need to be sorted if they are food/materials I guess.
Will need to be added back to worldgen too.

Done - they work well :)
Have made it so you can plant the same type of bush on another full grown bush too for vertical farming. Still have to change the textures for fast/fancy, I'll do it when I'm next working on textures, but for now they can stay solid :P
Will add back to worldgen with some other things soon.