Idaho, United States
I have a thornless blackberry bush (black satin) it is about 6 years old, when I bought it the tag said extra large berries. It gets afternoon sun.
I water it, prune right and fertilize it after buds appear with potassium and phosphorus, each year the berries aren't worth picking there the size of peas. why don't I get larger berries? thanks in advance for your help
- 16 Jul, 2012