Q.can Nellie Stevens Holly grow in Clay soils?
I live in zone 7 and am looking for a hedge/screening plan that will grow quickly for privacy near the road. I also thought of adding grasses such as Feather Reed Grass or Switch grass and Russian Sage mingled in among the Hollies until they grew to form a hedge. thoughts?

Easily grown in organically rich, slightly acidic, moist, well-drained soil, but highly adaptable; avoid heavy, wet soils. You will want to amend your clay soil to have success with this shrub.
Here are some links for you.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/nellie-stevens-holly-care.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm