What's the perfect tree?

Question

I live in eastern PA and I'm looking for a tree (preferably something evergreen) to act as a privacy screen between my yard and the neighbor's yard.

I want something in-between in density- not too lacy and sparse nor too thick and heavy. Nothing that drops huge cones or fruit. But ALSO the most important thing I am looking for is height. The tree would be by itself in a sunny backyard, and we don't want it to get to big. Hopefully our tree would never grow above 40-50 feet, if that.

Obviously, nothing prone to bugs or disease. Also, I really don't like junipers.

Answer 1

Arborvitae (Thuja) just ask what type will do well in your place.  These are lacy but not see-through and they are evergreen and can be cut at any time of the year.

Answer 2

Tsuga canadensis  Eastern Hemlock

Answer 3

Custard apples.

Resistant to most of the pests and bugs. Do not grow big. Do not become too spreading.

Other plants to consider are :

Ficus Benjamina,

Thuja,

Jacobs ladder (trained on supprting grill), Wonderful for cutting dust and provides a blind like effect even at a width of 8".

Carrissa Indica

Lantana camara.