This is the Cumberland Black Raspberry plant. It's the third year I've had it and this is the first time I've seen any evidence of fruit. I usually don't have that much patience with plants because the real estate on my deck is valuable and I don't want to fool around with anything that doesn't fulfill its promise. However, this plant has looked healthy every season so I decided to give it one more year. The fruit is supposed to ripen in July and August. I'll report back to let you know if it was worth waiting for.
For those who have more patience than I do, here's some additional information: this plant is hardy to zone 5 and likes full sun. I've kept it elevated, of course, for good drainage and I've done nothing to it in the way of maintenance. Also, I have not used any special fertilizer, just a small handful of the time-release fertilizer every year.
Bookshelf: Container Gardening Books