Assertion: boysenberry | /r/HasProperty | developed in early 1920s
Facets:
value: by horticulturist rudolph boysen of anaheim
type: OTHER
Source sentences:
text: The boysenberry was developed in the early 1920s by horticulturist Rudolph Boysen of Anaheim, California, who later turned it over to farmer Walter Knott for commercial development (see Knott’s Berry Farm).