I had one. It was lovely, no pests or diseases. But tho it had lots of blooms I *never* got a single nut! They make wonderful foundation/landscaping plants for edible landscaping, tho. The bush had some flowers that were white/yellow and some that were white/pink at the same time, very very pretty.
Mine needed pruning/training the first few years, it had some floppy branches that tried to lay on the ground. After that it was low-care.
I bought some seed to grow thinking that I could selling them as a landscape plant and then I saw their food and medical uses. Has anyone been able to grow them in US or Canada commercially is there a market?
Here's a picture of mine started from seed this winter. It seemed to really get shocked from the transplanting, but it came back well recently. It will be interesting to see how it handles a MN winter.