This video talks all about growing blackberries! Blackberry bushes are fairly easy to grow and are well worth the reward! Some blackberry bushes grow very tall and will require a trellis to help support the height. Blackberry bushes will continue to give fruit year after year, however, it usually takes 2 years for the plant to first produce berries. You can cut any canes that produce fruit at the base after the season is over since they won’t produce again.