Schellhorn Ground Services is a full service landscaping company that caters to all seasons. If you are looking for someone to maintain your property or to create a dreamscape then SGS is the right choice for you.. Lawn Maintenance,Spring & Fall Clean-ups,Landscape Design and Consultation,Plant and Mulch Installation,Shrub Pruning/Trimming,Seeding and Sod Installation,Core Aeration,and Lawn Dethatching.