Thanks for writing! Blackberries are biennials, meaning they grow canes during the first year and produce fruit on those canes in the second year. Second year canes die, leaving seeds from fruit to seed the next years first year canes. If they did not produce fruit the first or second years, then there would be no new canes to replace the old. If the canes you have are in their third season, they have lived out their lifespan. You may need to purchase new bushes, or ask a neighbor or friend for a few transplants. We hope this helps!
Hi Kristin,
Thanks for writing! Blackberries are biennials, meaning they grow canes during the first year and produce fruit on those canes in the second year. Second year canes die, leaving seeds from fruit to seed the next years first year canes. If they did not produce fruit the first or second years, then there would be no new canes to replace the old. If the canes you have are in their third season, they have lived out their lifespan. You may need to purchase new bushes, or ask a neighbor or friend for a few transplants. We hope this helps!