Answer: This time of year you can expect the berry plants to die back. Browning leaves are the first indication that they are dying back. Blackberry canes are biennial. New shoots arise from buds within the crown of the plant. These shoots, known as "primocanes", are highly vigorous and produce lateral branches. The second year these same canes become known as "floricanes". Small branches grow from the laterals, and bear the flowers and fruits. After harvest, the floricanes die. Meanwhile new primocanes appear during mid-spring.
I would allow the leaves to die, then cut the canes down. In the spring new fruiting canes should develop. Hope this answers your question!
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