Thornless semi-erect plant with medium-large, firm, dark fruit that ripen early for this type of blackberry. Origin: USDA-ARS, Corvallis, OR, by C.E. Finn, B.C. Strik, B.M. Yorgey, M.E. Peterson, P.A.Jones,andR.R.Martin.ORUS1393-1 × Triple Crown; 1/ 4 western trailing and 3/ 4 eastern erect/semi-erect blackberry; crossed 2001; selected 2004; tested as ORUS 2816-4; introd. 2017. USPP 30,448; 20 Dec. 2018. Tree: growth habit semi-erect to very erect; crown forming; thornless with the Merton Thornless source of thornlessness; vigorous; yield moderate, 6-7.2 kg/plant; less susceptible to UV and heat damage than many semi-erect cultivars despite 42 C in California trials; susceptible to red berry mite; cold hardiness very good, has shown no injury in 10 seasons despite temperatures below-20 C. Fruit: medium-large, 6.5 g; blocky-conical; drupelets fairly uniformly sized, shaped and arranged, better than Chester Thornless; drupelet fertility excellent; uniform and attractively shaped; bright, glossy black; flavor very good, sweet, 13.9 °Brix; pH 3.4; titratable acidity fairly low, 9.9 g·L-1 as citric acid; texture less ‘‘crunchy’’ than other semi-erect cultivars; ripens with or before Navaho and Triple Crown, the midpoint is comparable to Navaho and 10-14 d before Chester Thornless and Triple Crown; firm, similar to Chester Thornless; stores very well.
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