Would like a planting suggestion for privacy screen under/between mature white pines. White pines were planted on lot lines 20 yrs. ago -- have lost lower branches up to 6-8 ft. Can't find anything that will tolerate: shade, dry, waterlogged, clay, heavily compacted, and zero organic matter. . . which describes almost all of Pennsylvania. Every tree and shrub I see in the nursery say: 'moist, well-drained soils with high organic matter, full sun or thereabouts' and will die just weeks after planting anywhere in Pennsylvania.
Dry, Heavy Clay, Full Shade, Privacy Screen
Certified GKH Gardening Expert
Few plants can tolerate compacted clay soil; therefore, your best bet is to amend it. Here is an article that you may find helpful: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm
In addition, you might find the following article helpful too: https://www.gardeningknowhow.com/special/xeriscape/xeriscape-landscape-design-ideas-for-clay-soil.htm