What do you call a farmer who only plants crops?

You could call a farmer who only plants crops a few things:

* A crop farmer: This is the most straightforward and common term.

* A field farmer: This emphasizes the fact that they grow crops in fields.

* A horticulturalist: This term is more specific and generally refers to someone who focuses on the science and art of cultivating plants, especially fruits, vegetables, and ornamental plants.

* An agriculturalist: This is a more general term for someone who works in agriculture, but it could include someone who grows crops or raises livestock.

Ultimately, the best term to use depends on the context and the specific type of crops they grow.