Uses Allowed in Exclusive Farm Use Zones

Farm use
Public or private schools and related buildings
Churches and cemeteries in conjunction with churches
Propagation or harvesting of a forest product
Utility facilities necessary for public service
Relative help dwelling
Non-residential accessory structures customarily provided in conjunction with farm use
Operations for the exploration and production of geothermal resources
Operations for the exploration of minerals
Solid waste disposal site established by Environmental Quality Commission
Greyhound kennels
Climbing and passing lanes within right-of-way existing as of July 1, 1987
Temporary public road and highway detours
Minor improvements to existing public roads and highway-related facilities
Farm dwelling to replace dwelling listed on county inventory of historic property
Seasonal farmworker housing
Creation, restoration, or enhancement of wetlands
Wineries
Farm stands
Replacement dwellings
Model aircraft facilities
Farm processing facilities
Fire service facilities
Irrigation district facilitie
Utility facility service lines
Commercial activities in conjunction with farm use but not including farm crop processing
Mining, crushing, or stockpiling of aggregate and other mineral resources
Processing of aggregate into asphalt or portland cement
Private parks, playgrounds, hunting and fishing preserve and campgrounds
Parks, playgrounds or community centers owned by the government or a nonprofit
Golf courses
Commercial utility facilities for generating power
Personal-use airports that did not exist before 1975
"Home occupation" businesses
Forest product processing facilities
Manufactured and temporary dwellings used for hardships
Transmission towers over 200 feet in height, Non-greyhound dog kennels
Residential treatment and foster homes
Cultivation or harvesting of aquatic or insect species
New passing lanes or travel lanes, reconstruction/modification of roads, and road and highway related facilities
Destination resorts
Room and board arrangements for up to five unrelated people
Water-bottling facilities
Expansions of county fairgrounds
Living history museums
Animal shelter expansion

Dwellings Allowed in EFU Zones

Farm dwelling
Non-farm dwelling
Lot-of-record dwelling
Accessory dwelling
Hardship dwelling
Relative help dwelling
Replacement dwelling
Seasonal farmworker housing
Farm dwelling replacing historic property dwelling

Even with this extensive list, uses can be abused. Check out this "farm stand" in a Polk County EFU zone.