Now! Countryside crops can only be grown in the English Countryside and other crops that originate from your Home Farm are locked to growing on your Home Farms.
Previously, after completing all the English Countryside quests, you were able to grow either crops on the farm of your choice. This is no longer the case after tonight’s updates. At this point, Zynga has confirmed that this is a bug and is not intentional nor permanent. They are also working on a fix.
Read the entire statement from FarmVille Community Manager, Grimwell below: