An operation that grows algae for use in human or animal food and that is under one management
in one general (but not necessarily contiguous) physical location, whether the algae is grown
outdoors or indoors, is growing a crop and would be considered a primary production farm (see
the definition of “farm” in 21 CFR 1.227). A farm that also processes algae would be a farm
mixed-type facility, an establishment that engages in both activities that are exempt from
registration under section 415 of the FD&C Act and activities that require the establishment to
register (see the definition of “mixed-type facility” in 21 CFR 1.227 and B.1.1. in this guidance).
A farm is exempt from registration. As noted in Question B.1.4, a farm mixed-type facility is
required to register.
