I have 3 blackberry bushes and 4 raspberry bushes. I belive all the raspberries are everbearing, and the 2 of the blackberries are thornless and one has thorns.
Blackberries first. I cut them back this spring as suggested by several youtube videos, fertilized with 13-13-13, and they have really greened up but have not grown very much at all. My boss didn't cut his for nearly 2 years and that thing grew 20 feet around his fence. Did I do the right thing or should I let it go next year. I also feed with miricle grow 1 time a week or every other week depending on weather. The only other variable that I can think of is weather, we have had large amounts of rain and cool weather.
Raspberries - Everything I planted last year that lived has new canes coming up that are now around 4 to 5 inches tall. I also set out a couple of new ones. I have fertilzed with 13-13-13, and would water with miricle grow if it wern't raining every other day. In the past I have had a problem getting the raspberries started and producing. I hope that the ones that started coming out this year are established well enough. Is there some different fertilizer to put on raspberries or anything different about them and blackberries. Seems like the blackberries do much better than the raspberries.
All advice appreciated.