Answer: They may just be very vigorous canes that are responding to the excess moisture we've had in the Northeast this spring. It may also be an indication that the brambles need more light, and are putting a lot of energy into reaching toward it. It's normal for summer-bearing raspberry canes not to blossom and fruit until their second year. If yours are "everbearing" (producing fruit on new canes in the fall, and on those same canes the next summer), then maybe you have some genetic "sports" forming that are different from the rest of the plant (though I doubt this). Are these shoots definintely springing from the crowns of your established canes, or could they be invading wild brambles, such as blackberries? Those are some ideas -- I hope this helps!
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