Along my property line at the back of my perennial garden, I have an area that I'd like to screen from my neighbors. It's about 10-15' and barely gets an hour of sun per day as it is understory some silver maples and two hideous box elders.

Will Nannyberry do ok there or will they not grow much?

I have sandy soil, but this area is on my irrigation system, so they'll get watered every other day during the growing season.

I understand that they do fruit, which is fine, so long as the berries don't attract any more tree rats (squirrels). Birds, I can deal with.

I know I'll be able to pick up a few of this shrub for a good price in a spring sale. Will I get much of a screen with them in say, 3 years' time? Or should I skip them? I've had goatsbeard in that spot for a few years now and I don't think they've grown in height.

Your opinions please?