Where was Blood Harvest filmed?
1987 film by Bill Rebane
Blood Harvest (1987) was filmed in Merrill, Gleason and Irma, 3 places named in its Wikipedia article's Production section, in the United States. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's Production section
Wikipedia’s Production section names 3 places. Each links to the sentence that says so.

