The plants also respond differently depending upon their location in a garden. Plants growing in full sun die down completely in summer, whereas shade-planted ones are full and green all summer. Don't cut the stems and leaves off until they die out completely as the plant will use the dying leaves to manufacture food that it will store for next season's growth and flower production. Q. My blackberry plants had luxurious growth but no fruit. A. Don't touch those vines as next year's fruit will be produced on them.
Canes are biennial, growing one year and flowering and fruiting the next year.
They should be carefully tied to your trellis wires now. This cycle of yearly renewal will continue indefinitely. First there were pretty flowers, then came the seed things. They looked like a giant dandelion puffball. I have to keep pulling it up every few days.