Requires new flower pot block to substitute.

Hmm... if you're going to need to make a new flower pot block anyway, would it be worthwhile to make glazed pots too? Perhaps pot + dye = colored glazed pot?

Metadata, in general, gives the ability for one block to have 15 variations. In the case of the vanilla pot, each possible content takes a value...

To solve this, Extrabiomes will create a new pot that is a ghost block...in other words it cannot be crafted and cannot be in inventory...the only time the new pot comes into existence is when the player places an Extrabiomes item in a vanilla pot. At that time, the Extrabiomes pot will replace the vanilla pot. When the Extrabiomes pot is broken, it will drop a vanilla pot.

Brilliant! Need forge hook for this, though. :3

Ah. I need to search better. Mentioned this in the forums just before finding the topic. ^^;
What about implementing a "Plant + Pot = Potted Plant" recipe as a temporary solution until forge has custom flowerpot support? (Still breaking as two items, of course.)

@AnonTheMouse your temporary solution matches what I was describing...but it is not as easy as it sounds. I have spoke with cpw who has a Forge fix in the works for this, so we will wait.

Celebration is in order! 😃

Happy days all around, then!