Species thornless blackberry Guide
black-orange fruits with lime leaves and lime-brown branches

thornless blackberry

Rubus fruticosus 'Black Satin'

Cycle:

Perennial

Watering:

Average

Propagation:

Layering Propagation

Hardiness Zone:

6

Flowers:

Showy, White, Pink Flowers In Summer

Sun:

Full sun

Soil:

Well-drained

Fruits:

black Fruits In Summer Ready In Summer

Edible:

Yes

Leaf:

Yes

Leaf Color:

green,black

Growth Rate:

High

Drought Tolerant:

Yes

Care Level:

Medium

watering

Water your Thornless Blackberry (Rubus fruticosus 'Black Satin') twice weekly during the growing season, from late spring until mid-fall. Water deeply, giving enough water to saturate the root zone. When the top 2 in (5 cm) of soil is dry, give the plant about 1 inch (2.5 cm) of water. During hot days or dry spells increase the amount and frequency of watering. Water in the morning or late evening to reduce the amount of water lost to evaporation.

sunlight

Thornless blackberry (Rubus fruticosus 'Black Satin') plants need about 6 hours of full sun per day for best growth. They will tolerate some shade, but fruiting will be reduced with too much shade. They prefer a location with morning sun and afternoon shade. The plants should be placed in an area with good drainage. If planted in an area that tends to get soggy, supplemental planting should be done to ensure the best possible performance.

pruning

Thornless blackberries should be pruned in early spring, right after the last frost when the plant is still dormant. Prune each stem back to a length of 12-18 inches. Remove any dead or diseased canes and any canes that are thin and not producing much fruit. Also, prune out any vigorous upright canes, or cut them back to side shoots to promote branching and a more bushy growth habit. Be sure to leave a minimum of 3 to 4 canes per plant.