Bought three raspberry plants two years ago, planted them, got two half ripe berrys on 10 foot vines. This year I have several 10-15 foot vines with no blossoms at all. I did not cut the old vines back. Some of them grew and a few more new ones grew. My sister next door did the same thing and has many quarts of berrys on the vine and in the freezer. My vines get the exact same amount of sun.
What the heck.
Any ideas?

Lee