Assertion: blackberry's fruit | /r/HasProperty | usda zones
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text: Some varieties, like the Arapaho thornless blackberry (Rubus fruticosus 'Arapaho,' USDA zones 5 to 10) produce ripe fruit about 11 days before the Navaho (Rubus fruticosus 'Navaho,' USDA zones 6 to 10), which is the world's first erect-growing thornless blackberry.