If the lightness/airiness of the foliage of a birch will provide sufficient coverage, either paper or sweet or river ('Heritage' is whiter barked than the species) could be an option. Planting a clump, or several clumps could be enough coverage. I would go with the paper birch, which I would dearly love to grow here, and can't.

Various oaks, beech (may be too slow growing), maples are all possibilities. Of the maples, I like sugar maples. Northern red oak is probably the best oak for your area, but may not be fast growing enough. The same applies for a beech, another tree I dearly love. Tamarack would be an interesting compromise between a conifer and deciduous choice, being both.

If you want an evergreen, and if wooly adelgids aren't a problem in your area, then a hemlock would be one of my first choices. Second might be a balsam fir, but it too might not be fast-growing enough.

Not just one tree, but some which I fondly remember growing up in VT, but which just won't grow in SC.

It seems I didn't mention what I don't need: Birch, oak or more maples, there are about a million on the property already (the JM I have planted was a gift from a friend - otherwise it would not be on the list in my previous post). I also am not looking for an evergreen.

However, beech or tamarack might be a possibility - I'll have to look into them. Hmm, there is also the new elm out there, anyone have experience with them?

Well, since you only asked for TALL trees, that's what you got. I would agree that if they are already there, something else might be nicer. The only reason you might want to rethink the "no conifers" idea is if the trailer is very visible when the leaves are off the trees. If you think the bare branches will do the job, OK.

Another possibility, again from past memories, is a butternut. You might not be able to find one, as I am not sure if they have commercial qualities, so aren't propagated. You might find a tree and plant a few nuts. The nuts are edible, but need treatment like walnuts (same family), drying, dehusking, with attendant stains, and shelling. They are tasty, as I recall. The squirrels would appreciate them, if you didn't. Walnut is another, more easily found, possibility.

I've no experience with the new elms, nor with any of the re-created/hybridized chestnuts, which might be another tree variety to think about.

How about a Lime(Tillia sp) These grow very tall but not sure of their growth rate.

Recommend adding a conifer. Conifers mixed with hardwoods make for a wonderful landscape. 3 things point to a conifer here : you don't have any; you're looking for something tall; you want a visual screen.

What about Liriodendron tulipifera? They are listed as being found in VT, but not NH. Perhaps they grow there anyway?

Tilia americana, basswood or American linden, is listed for zones 3a-8a, so might well do. Maximum heaight at 75 years is 28m, at 20 y., 9m.. T. cordata, littleleaf linden, the European tree, has the same zones, will be slightly shorter, and grows a lot tighter, with branches to the ground if it has room. There are other species, so you might find one to plant.

The only caveat is that all Tilias seem to be slightly prone to insect and some disease problems, so may not be too attractive or long-lived in your setting.

Liriodendron. Very tall, healthy, very beautiful.

If it were my place, I'd also give an American elm a shot. I have a 'Valley Forge' here and planted one at my old place in z5. Neither was old enough to show its true DED colors, but I can tell you that, in both places, japanese beetles do some damage in the summer.

Not sure if nyssa sylvatica will do OK in z4, but it's a lovely tree and might be worth looking into.

Liriodendron is listed as zones 5a-9a and 4b with selection of appropriate genetic material - so it might be winter-killed. They are lovely trees, tall and relativley slender.

N. sylvatica is listed as hardy in the same zones, so it seems with both of these you would be pushing the edges of the hardiness. Tupelo is seemingly hard to transplant so a smaller, container-grown tree would be better than a larger, field-dug one.

Thanks for all the suggestions. You have given me a lot to think about (and I thought that part was over when I made the plan out). I'll have to research into the Linden, Basswood, Liriodendron, Butternut, Tilia and Elm a bit more before making my decision - always the tough part.

American basswood (T. americana) is a hardy, fast-growing native tree. They can get quite tall. PLUS they have fragrant flowers in early June. Butternut (Carya) is a good choice, but it is a s l o w grower. I wouldn't risk a Tulip tree (Liriodendron). They are iffy in zone 4.

Black Cherry - Prunus serotina 50-60' (100')cherries
Tulip Tree - Liriodendron tulipifera 70-90' (200') flowers 2nd largest tree east of Mississippi
Cucumber Magnolia - Magnolia acuminata 50-80' flowers & fruit
Pin Cherry - Prunus pensylvanica 25-40' (80') cherries
Hickories - Carya sp. nuts
Butternut - Juglans cinerea 40-60' (100') nuts
Black Walnut - Juglans nigra 50-75' (150') nuts
Balsam poplar - Populus balsamea
Big-tooth Aspen - Populus grandidentata 50-70' grouse eat buds
Quaking aspen - Populus tremuloides 40-50' (100')grouse eat buds
American Beech - Fagus grandifolia 50-70' (120') seeds

Ziggy