||03-25-2013 12:05 PM
My experience with Arborvitae is that they are fine as long as you don't have snow... They tend to get damaged and not regrow. In our new house we have some Cypress or Cedar (not sure exactly) which have grown up and now have no coverage from 0-10 feet, and scraggly branches above to about 20'. If you have space, a lot of people in the NY area will grow Leyland Cypress, they're not as dense as Arborvitae or Cypress/Red Cedar, but will grow more uniformly and get larger over time (although they may get much taller than 10'). I think the above poster had something better, a yew or similar hedge. I would just say that you're better off with a 4-5' tree/shrub than a 10' shrub, given the lack of roots that the plants come with, and many are prone to die with such a shock. But it takes a long time for cover plants to grow to a suitable cover.
Something you have to take special consideration of is sunlight. I've seen it a dozen times, people plant a hedge row of arborvitae or such and they have various levels of sunlight. So the trees start out at 5' tall, and vary in height dramatically depending on the level of sunlight. Most hedge plants need full sun, if you can't provide full sun, you might be able to get a Rhodedendron or similar Azalea to grow up tall enough.