You need to make a separate block in block bench of the pot with your flower on it. Then make a block with that 3d Model. and make a procedure when player right clicks an empty pot while holding the custom flower, it replaces the pot with the block that has the 3d model of your flower in a pot.
You need to make a separate block in block bench of the pot with your flower on it. Then make a block with that 3d Model. and make a procedure when player right clicks an empty pot while holding the custom flower, it replaces the pot with the block that has the 3d model of your flower in a pot.