I am a fan of forsythia for what you want. I love the spring color and then the bush can be pruned to shape as needed. I cannot stand what the idiot next door has done, so I planted a long row of forsythia. It has been about 4 years and I don't see his mess now. You can let them get thick or you can thin them. They can grow up or be arching. Deer don't bother them and they are tough.

The small-leaved Rhododendrons would be one choice. Others would be mountain andromeda, Pieris floribunda, and Leucothea - all of which are evergreen. One of the more compact mountain laurel would be still another. all of these coule easily be maintained to your desired height by once-a-year pruning.

smoke bush can easily be trained to grow in that size a space, without looking like a clipped privet- and they're stunning looking plants. Oakleaf Hydrangea is another stunner- in your case, I would go for a dwarf, since they can grow to the size of a new Beetle over time. most rhodedendrons are evergreen - you'll want to add more organic matter, and dig a wider hole than you think you need, they have surprisingle weak root systems (comes from growing in loamy forests with deep beds of soft soil) and have a hard time thriving in heavy clay. I think the little japanese maples are pretty when their branches are bare, myself, so you might want to look in to one of them... and definately look in to several varieties of lilac- the small- leaved ones like 'miss Kim' are really pretty looking when they're not in bloom, which I can't say for the old-fashioned kinds.

Thanks for the kind comments, Marie! Here are a few photos, splaker. I hope that this helps you with your project. Before I started this project in fall 2009, I think, I tried to web search mixed shrub borders and didn't find much that inspired me. But I knew I had seen in person similar things planted various places, so I had some ideas in mind and then just winged it. My goals were to block or distract from some of the sightlines to a work area from the main entrance drive. We had just cleared a wooded area to have more sun, so I was starting from a blank slate. I knew I wanted a mix of evergreens (for winter interest) and deciduous shrubs, vines and perennials for colorful and contrasting foliage and flowers. I know I have more space than the typical suburban yard, but something similar to this could be done on a scaled down basis. June of 2010 after planting fall 2009. 3 kinds of evergreens (2 or 3 of each randomly spread down the bed length - Thuja 'Sunkist', Thuja 'Techny' and a slower growing cultivar of blue spruce that I will probably eventually have to remove due to large size or budworm damage), a few small pagoda dogwoods, a couple of Hydrangea paniculata (Quickfire and Pinky Winky), a Coppertina Ninebark, two Spicebush (Lindera benzoin), a few rhodies, some winterberry holly, and a few perennials. Before planting, I laid down a bunch of composted manure. After planting the various shrubs, I mulched heavily for moisture and weed control, first putting down cardboard and then about 6" of loose mulch that packed down to 4" or so. Perennials were planted around the edges after the main shrubs were in by cutting through the cardboard. I tried to leave enough room between the evergreens and shrubs to allow them to grow to just grow together overtime, but not be super crowded, so it was rather sparse the first year or two. I didn't do formal plans, but knew the ballpark size of the mature shrubs and the bed size, and once I bought the plants, I plopped them down in the bed and moved them around until I liked the layout, and then got out the shovel. I didn't pick out specific varieties ahead of time, but went around to local nurseries during fall sales knowing that I wanted rhodies, varied colored medium evergreens, etc. and chose from what they had available (that met my needs) to keep expenses down. Looking east from the middle Looking NE from the SW side (June 2010) In December of 2010 after one full growing season looking west from the dirt pile just visible on the right (east) side of the photo above After 4 growing seasons with some added perennials but not much in the way of added shrubs it is fairly full. Late October 2013 June 2014 looking East along the front of the bed. Looking down the back side as fall color is just beginning to develop - no perennials since this is the work area side. Here's a photo in taken late November 2014 that was from a similar angle to the second photo at the top. There have been a few plants over the years that haven't worked out due mostly to the voles that are a curse of my gardening existence, but for the most part I am quite happy with the bed. It's at my husband's shop so I don't get down to it as regularly as I might wish, but it doesn't need more than a few of hours of weeding per season and some tidying up and cutting back in the fall as long as I keep the mulch in good shape. I add more mulch every couple of years where there is space between plants. I've also added edging, a combination of the rolled edge black plastic edging from a big box store and recycled bricks lining the inside edge of the plastic (visible 2 and 3 photos up) to run the lawn mower wheels on so no edge whacking needed. Also, a couple of comments on some plants mentioned in previous comments. I have 3 Viburnum plicatums, one of which is about as old as the bed above and might be mariesiii but might be another selection. They bloom well every year (we got to -22 last winter and near that most winters) so you should be OK unless you get a whole lot colder than that. They all have great fall color. Burning bushes can seed around to wild areas, so I wouldn't recommend them for that reason, but they are also boring green blobs most of the year. Blueberries are a good replacement if you have acid soil with spring flowers, summer berries for you or the birds, and nice red to maroon autumn color. I ripped out my one Viburnum 'Blue Muffin' because it didn't bloom well, had no fall color in my garden, and was infested with Viburnum beetle. There are quite a number of medium sized/slower growing Thuja cultivars that won't get giant (as well as other conifers that you could check out on the conifer forum.) I found 3 Thuja types in good sizes in local nurseries in my quite rural area, so you have a good chance of finding some. If you have a lot of deer they may not be a good choice unless you want to spray them in winter. We have deer, but are rural enough that they don't bother the gardens for the most part. I really like the various variegated shrub dogwoods and the size of the larger ones will work well for you. Coppertina is has been a great shrub for me, but if they are prone to mildew in your area, there are others that are less mildew prone in tests. I'd love to hear how your project works out!