Daylilly 'Hyperion' is about 4 ft tall for me, and flowers in part shade. It would be hardy for you. There are some other tall daylillies that might be easy. I like 'Hyperion' because the soft yellow looks good with lots of color schemes, and it smells nice. Oh your name is Daylillydreams so maybe you have some. I usually think of daylillies for sun but some are fine in a shady spot.
For the first year an annual that grows well and looks nice in part shade are the tall Nicotiana cultivars and species. Flowers come in white, like N. sylvestris, lime green (N. langsdorfii), and rosy pink (N. 'Tinkerbell'). For me they will survive a mild winter, I can't imagine that would be the case for you. But they love part shade and grow fast in the spring.

daylilydreams said:I would like some ideas for some tall perennials for partial shade. I am thinking about screening out the sight of a neighbors dog kennel with some taller plants that would look good and not need staking. Perhaps in the four plus height range.

What about coleus? I know they aren't perennials, but they will reseed and their color is just beautiful in the shade.

Just thought of one - goatsbeard? They get about 5 feet tall, very low maintenance. I use them to screen views of my alley.

Thanks everyone I will keep these in mind. Jeanie I really like the idea of the goatsbeard. I use to have some in another part of the garden where it got out of hand, but it might work in this garden.