Chester Thornless Blackberry vs Red Mammoth Raspberry - TreeTime.ca

Chester Thornless Blackberry vs Red Mammoth Raspberry

Rubus sp. SK Red Mammoth

Rubus fruticosa Chester (Thornless)

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Red Mammoth Raspberry
Chester Thornless Blackberry

Developed by the University of Saskatchewan Fruit Program, SK. Red Mammoth was a high yielding and firm variety released in 1999. It produces distinctively large bright red berries about 1 inch wide. It is also more cold hardy than older raspberry cultivars. Red Mammoth is firm which makes it suitable for commercial production and sweeter than Boyne. Floricane.

Needs to be trellised as canes are not as sturdy as other varieties.

Chester Thornless Blackberry is a self-pollinating fruit-bearing shrub. In mid-summer, the Chester Thornless Blackberry produces large, sweet-tasting, heart-shaped blackberries that are perfect for fresh eating. It is a semi-erect blackberry plant that requires little support from a trellis to keep its fruit off the ground. Don't forget to protect your berries. The birds love this shrub almost as much as you will.

Chester Thornless Blackberries are floricanes, primarily fruiting on second year canes. Each spring cut back all two-year old canes, leaving only the last year’s growth.

Red Mammoth Raspberry Quick Facts

Chester Thornless Blackberry Quick Facts

Zone: 3a
Zone: 3b
Height: 2.4 m (8 ft)
Height: 0.9 m (3 ft)
Spread: 1.2 m (4 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Suckering: medium
Suckering: high
Maintenance: medium
Maintenance: high


Flowers: pink
Berries: very large
Berries: heart shaped black
Firmness: firm
Firmness: firm
Flavor: sweet
Harvest: June-July
Harvest: July
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: chester blackberry, hardy blackberry