I planted 75 North Blue, and 25 St. Cloud 3-4 year old in 1gallon pots,
in May 2005. The plants are still alive, but have regressed . Each year they
seem to be smaller than the year before, last year I had only a couple of plants fruit. My zone is 3a, the soil was ammended to a ph of 5 by adding sulfur. They each have 2 1/2 lph drippers for irrigation, with reasonable snow cover in winter. (They are still buried as I write this).
In the same orchard I have 200 sea buckthorn trees, and 150 Black and
red currants, that thrive with the same treatment. I would appreciate any
advice.
Thanks Chic.