Blackberry plant spacing is based on the type of cultivar. Trailing, vine-like cultivars require 4 to 10 feet between each plant and 8 to 10 feet between rows. Upright blackberry plants need less room between each plant. Place plants about 4 to 6 feet apart and allow 8 to 10 feet between rows.
About this Author
S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.