Where was The Gardener's Son filmed?

1977 television film directed by Richard Pearce

The Gardener's Son (1977) was filmed in Burlington, Yanceyville, Clarksville, Alamance, Glencoe, Caswell County Courthouse and 1 more place, 7 places named in its Wikipedia article, 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.

See them on the map → Wikipedia Source data

Places per Wikipedia's article

The Wikipedia article names 7 places. Each links to the sentence that says so.