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Rosaceae
Trees and shrubs
Thornless mulberry 'Columbia Star'
Hardiness
Zone 6
Discover the plant
Family
Rosaceae
Rubus fruticosus 'Columbia Star' is a thornless blackberry known for its delicate flavor and superior fruit quality. This fruiting shrub, with its cascading bushy habit, develops long, flexible canes ideal for growing on trellises or as a structured fruit hedge. It produces large, shiny black, elongated, firm, juicy, and exceptionally sweet fruits, perfect for fresh consumption and artisanal processing. Its summer fruiting, on previous year's canes, ensures an abundant mid-season harvest. Its dense green foliage attracts pollinators and contributes to garden biodiversity. Rubus fruticosus 'Columbia Star' combines high yield, excellent fruit holding, and simplified cultivation thanks to its thornless nature.
Soil and care
The rightconditions.
Fertilization
Compost or fertilizer for berries in spring
Bloom and dimensions
The completeprofile.
Bloom periodSpring
Flower colorWhite
Foliage colorGreen
Foliage typeObsolete
FruitingLarge, shiny black fruits, elongated, firm, juicy and very sweet
Maximum height2 m (7 ft)
Maximum width2 m (7 ft)
Growth rateFast
Hardiness zoneZone 6
Minimum temperature-20 °C
Its strengths, naturally.
Safe for pets
Pets
Attracts or supports pollinating insects
Pollinators
Plants that attract butterflies
Butterflies
