Hickory Hollow Landscapers’ signature is the rock garden. Hickory Hollows landscape design is so natural it hard to believe it is man made. Hickory Hollows landscape construction technicians plant every rock. They are turned and angled until each rock looks like it was found in nature itself. The rock garden consists of natural boulder walls, natural garden pathways, natural staircases, natural waterfalls and water features on swimming pools and garden ponds. Serving Bergen County, NJ – Rockland County, NY – Westchester County, NY – Orange County, NY – Hudson Valley, NY.