New canes in August on autumn raspberry canes

[craftygirl24]

Hi
This year my autumn raspberries are now fruiting really well but there are new canes growing as if they are summer raspberries. Anyone know what I should do with them? And why has this happened?

[Thelma Sanders]

They can carry on growing and fruiting until October in a good year, so I wouldn't worry about it. You may get a bumper late harvest

Just cut them all to the ground in the winter as normal.

[BUFFS]

any stems that do not fruit have grown too late for this year, I tie these in to supporting wires to protect them from gales over the winter and they will flower/fruit in late june/ july next year, so you will have some early as the "proper" stems will take over in august/ September etc, so you then get a long cropping period. with our shorter summers here we get this most years, without it being a disaster, and the stems branch a lot, so you end up with more fruit, eventually..

[Bren In Pots]

I do the same as Buffs only difference if the canes are tall I cut them down to two to three feet. Seems to work well for me.