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Find Your Hardiness Zone

Columbia Giant Thornless Blackberry

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Original price $16.99 - Original price $16.99
Original price
$16.99
$16.99 - $16.99
Current price $16.99
SKU E528

Rubus subg. Rubus Watson 'Columbia Giant'

When we say Columbia Giant, we're not kidding! Enjoy bountiful crops of the largest-ever, thornless blackberries. The mild-flavored fruit is firm and easy to pick, conical in shape, and sweet - with a pleasing touch of tartness and just a hint of raspberry flavor. 

It is a new introduction from Oregon State University and the USDA, proven to thrive and be hardy in the Pacific Northwest and many other areas of the nation. Ripens early summer - early July here in the PNW. The plants are trailing and vigorous, and would benefit from trellis support. Expect 10-15 pounds of berries per crown.

Cold Hardy to USDA Zone: 6

Mature Height: 6'

Sun: Full Sun

Ripening Time: Early

Pollination: Self-Fruitful

Read our Blackberry Growing Guide

Size: 4" Pot

QUESTIONS & ANSWERS

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  • Is it full sun or can take part shade or full shade

    For best berries it needs full sun. It is not shade tolerant and cannot live in full shade.

  • How early should I plant these in zone 6?

    As soon as the ground is no longer frozen.

  • Do I need a pollinator with the Columbia Giant blackberry?

    Not at all. As with most blackberries, these are self fertile.

  • best time to plant zone 9

    Springtime.