Chester
- A semi-erect blackberry developed by the USDA-ARS in Illinois and Maryland from a cross between a breeding selection and 'Thornfree'
- Medium (~5g) sized fruit; deep black color; round shape; medium number of drupelets per fruit; large size seeds;
- Good flavor but very different and less aromatic than trailing blackberry (i.e. 'Marion')
- Thornless; very high yielding
- Late ripening season; typically begins in mid-August and can go until frost.
Kotata
- From a cross of two USDA selections; grandparents include Boysenberry, two wild Northwest blackberries and an eastern blackberry.
- Medium to large (6-7g) fruit; deep black color; medium seed.
- Fresh season is typically July 1 - July 24.
Loganberry
- A cross between blackberry and red raspberry.
- Commonly used in pies and wines. Has unique, tart flavor.
- Medium size (5.0g), deep red, medium seed.
- Fresh season is typically June 20 - July 10.
Silvan
- A trailing blackberry from a cross of ORUS 742 x Marion; cross was made by G.F. Waldo with USDA-ARS in Corvallis who sent the seed to Australia (Victoria) where the original selection and development took place.
- Generally similar to 'Marion' in growth habit, yield and fruit quality.
- High yields produced on very vigorous, thorny plant
- Medium-large (6.2 g) fruit, larger than 'Marion'; purple-black color; excellent flavor; excellent processing characteristics. Fresh fruit are not as firm as 'Marion'
- Early ripening (2-6 days before 'Marion') typically beginning in late June and extending until about the end of July.
- Growers report greater winter hardiness than 'Marion'
Waldo
- From a cross of two USDA selections, one grandparent is Marion.
- Medium to large (6-7g) fruit; deep black color; very uniform conic shape; high number of drupelets per fruit; medium size seeds.
- Thornless; easier on workers and eliminates thorn contaminants concerns.
- Late ripening; fresh season is typically July 15 to August 10.
