Blackberries are large, trailing plants that require support. They may be grown in rows or clustered around a central stake. They thrive in moist soils but need adequate drainage. Blackberries will tolerate some shade but will perform and yield best in full sun. Plant them 4 feet apart allowing 8 feet in between rows. At planting cut them back to six inches high
Feed blackberries in early spring when new growth first starts to appear. A balanced all-purpose fertilizer or vegetable fertilizer will work best.
Blackberries produce fruit on a two-year cycle. As new growth emerges allow it to trail. After harvest pick six to ten of the strongest canes and train them on to your support. Cut off all lateral branches below support, very long laterals can be trained upright in with the other chosen canes. Remove weaker stems and all the stems that fruited in the current year.
Disease and Pest Control
Blackberries can develop several disease and insect pests. Cleaning up dead plant material and proper pruning are the best preventative measures. See a Spray Schedule for more detail.
Download a complete information sheet on blackberries including popular blackberry varieties.
Black Satin (Thornless) – Large firm, glossy black berries. Sweet flavor and excellent for preserves, baking and fresh eating. Heavy yields on semi-erect thorn-less vines. High disease resistance to prevalent fungal diseases. Ripens in July.
Boysen (Boysenberry) – Very large, matte dark maroon berries, with soft, very juicy flesh. The Boysen has a distinctive rich, tangy, flavor and very aromatic. Excellent for eating fresh, juices freezing, canning, baking and preserves. Vigorous trailing vines and among the largest fruits. Ripens Early July.
Boysen (Thornless) – Cross between rasp- logan- and blackberries. Large reddish-black, seedless, juicy berries with a sweet tart flavor. Great for fresh eating, cooking and freezes well. Ripens in July.
Loganberry (Thornless) – The berries are long, large dark red and highly flavored. The logan is often used for baking, juice and wine. Average yields. Ripens late June to July.
Marionberry – Named for Marion County in Oregon. Marionberries are large shiny black berries with an excellent flavor. Marionberries are great for fresh eating, jams, baking, and preserves. Vigorous thorny plant with strong canes. Ripens in July to Early August.
Tayberry – Berries are large long conical and red-purple with an excellent slightly aromatic flavor. Excellent for freezing, canning, and preserves. Ripens early July to mid August.
Triple Crown – Extremely large berries on thornless canes heralded for it’s excellent productivity, vigor and flavor. Great for all uses especially preserves, pies and juices. Ripens July to August.