Maybe a shortage of bees.

if it were a shortage of bees then my other plants like raspberries would be having issues as well correct? and the wild ones are getting the full berry as well...? I'm just confused.

any others ideas?

Might be a frost or a bug issue?

I think i know what you mean...mine sometimes aren't fully formed because the stupid Rose Chafers LOVE to feed on the flowers (they bloom right when they are at their max). When they chew on it, it must damage the flower head some, so part of the fruit is then damaged, yet it still forms. I usually just spit out the bad part.

hmmmm. I wonder though, this happens every single year. what are the chances that bugs are getting them every year? and every berry? but not the wild ones? IDK, something just seems fishy about this whole situation like there is something missing in my soil or something ya know?

You might have gotten a bum plant from the nursery. For example it could be a seedling and not the actual variety. I have a blackberry I am having the same problem with now, all the berries are small and I don't know why. I have several varieties and only one plant has small berries.

Scott

well that bites. so it is probably hopeless then. grr. time to dig it up, it is really growing great lately too.