Rejuvenating raspberry crowns?

General Fruit Growing
#1

This year my raspberry bushes came out small, largely a factor of a dry 2021 and neglecting them a tad; I do know that every year we get the canes we worked for the year before. As I’m weeding I’m noticing that some of the crowns show the remnants of the canes that came prior; because they are already on an ideal location canes are pruned and new canes come out of the same crown. Most new root growth pops on the wrong place so they get taken out.

Question; is there any issues letting the crowns get old?

#2

I don’t know of any issues with letting crowns get old. I do know that this year’s fertilizer and water controls the size of the primocanes which controls next year’s yield.
When crowns die I replace them with volunteers that are growing in the wrong place