Q.Prune Blackberries
You say trim 2 year old canes. Today, how do I know which canes produced berries? They all seem to look the same! Jim

BushDoctor
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on January 4, 2022
Usually, older canes will be "woody" whereas newer canes will be more "flimsy" and have more bend to them.
This collection of articles will give you more information on blackberries:
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