What crops are grown in eastern plains?

The "Eastern Plains" can refer to several different regions, so to give you a specific answer, I need more context. Please tell me which Eastern Plains you are interested in. For example, are you asking about:

* The Great Plains of the United States?

* The Eastern Plains of Australia?

* The Eastern Plains of Argentina?

* Or another region?

Once I know the specific region, I can give you a list of the crops commonly grown there.