We have two huge, incredibly tall, hemlocks that unfortunately will need to be removed in the next couple of years. They've been treated twice yearly for wooly adelgid, but they are just a ghost of what they used to be, and now our arborist says they have a scale which is very hard or expensive to control. So I'm seeking input on what evergreen could be a replacement, in our conditions.

We are in zone 5/6 (greater Boston area), with a heavily treed lot. The hemlocks are at street level (but about 20 feet away from the actual street), on the north side of the lot. Our house, on the south side of lot, is perhaps 30 feet higher than the street. The hemlocks currently block the street view - something we would want the replacement plant to do. Because our lot is so heavily treed, and on a downward slope to the north, the lot is mostly shady. But because there is a road, sidewalk, and 20-ft border in front of the trees, the sunlight is not blocked, and we do have one blue spruce doing very well in those conditions, even though it does not receive full sun.

Thanks for your input!