Boysenberry
Rubusursinus 'Thornless Boysenberry'

Family: Rosaceae (ro-ZAY-see-ee)
Genus: Rubus (ROO-bus)
Species: ursinus (ur-SEE-nus)
Cultivar: Thornless Boysenberry

Category
Biennials
Edible Fruits and Nuts
Shrubs
Vines and Climbers

Water Requirements
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Grown for foliage
Herbaceous
Smooth

Foliage Color
Blue-Green

Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Where to Grow
Can be grown as an annual

Danger
N/A

Bloom Color
White/Near White

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer

Other details

Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information

Propagation Methods
From herbaceous stem cuttings
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings
From hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost
From seed; direct sow after last frost
By budding
By simple layering
By tip layering
By serpentine layering
By stooling or mound layering

Seed Collecting
Remove fleshy coating on seeds before storing
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Ferment seeds before storing
Properly cleaned, seed can be successfully stored