Columbia Giant Thornless Blackberry
The Columbia Giant Thornless Blackberry is easily the largest blackberry we’ve ever seen! And it tastes amazing too. Columbia Giant is a result of the hard work of Dr. Chad Finn in Corvallis, Oregon. Columbia Giant produces thornless and vigorous trailing vines with fruits that are firm and easy to harvest with a conical shape and a pleasantly sweet flavor and just enough tartness to make it a very well balanced fruit.
Click here to view our Cane Berry Growing Guide
Latin Name: Rubus hybrid
Site and Soil: Blackberries like 1/2 day to full sun and well-drained soil.
Pollination Requirements: Blackberries are self-fertile.
Hardiness: Blackberries are hardy to minus 10 F.
Bearing Age: 1-2 years after planting.
Size at Maturity: 6 ft. in height on trellis.
Bloom Time: April
Ripening Time: July
Yield: 10-15 lbs.
Pests & Diseases: Blackberries do not suffer from significant pest or disease problems.
USDA Zone: 6
Sunset Western Zone: 2-24
Sunset Northeast Zone: 31, 32, 34-41