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Horn & Co. (Previously JHLA)

Horn & Co. (Previously JHLA)

Landscape Architects & Landscape Designers
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About Us

Working closely with architects, our landscapes reflect the spirit of a home’s design and offer a unique interpretation of the terrain. We compose garden spaces that thrive throughout the year with beauty and grace, always considering a garden’s temporal flow, its adaptability to a client’s changing needs, and how these will affect our clients and the natural world. We vigilantly adhere to the guiding principle that a landscape should respond to its adjacent architecture and its social and natural histories. Our commitment to green design and our respect for the social and environmental impact of a site are primary considerations in our work. Enhancing the beauty of the natural world comes with a commitment to doing it with respect for the site’s history and native elements, minimizing negative impacts on the environment. We calculate our annual carbon footprint and offset our use of electricity and fossil fuels through TerraPass, whose programs help reduce greenhouse gases, support clean energy, and restore freshwater ecosystems. We are partnered with DBI Construction Consulting to provide estimating and appraisal services for the insurance market. We travel nationally from Puerto Rico to Hawaii, strengthening our expertise in tropical plants, storm resilience, resorts, and golf courses, continually enriching our fluency in high end hospitality. Horn & Co. is a Washington DC landscape architecture and horticultural firm specializing in the design and implementation of high-end residential and commercial gardens throughout Virginia, Maryland, Washington DC, Delaware, and New York state.

Services Provided

3D Rendering, Custom Bocce Ball Courts, Custom Fire Pits, Custom Water Features, Deck Design, Drafting, Drought Tolerant Landscaping, Edible Gardens, Garden Design, Gazebo Design & Construction, Green Roofing, Greenhouse Design & Construction, Hardscaping, Landscape Design, Landscape Plans, Living Walls, Natural Swimming Pools, Organic Gardens, Outdoor Lighting Design, Patio Design, Pool Landscaping, Project Management, Site Planning, Swimming Pool Design

Areas Served

Alexandria, Annandale, Arlington, Baileys Crossroads, Bethesda, Camp Springs, Chillum, College Park, DC (Washington), Fairfax, Falls Church, Fort Washington, Franconia, Groveton, Hyattsville, Hybla Valley, Idylwood, Jefferson, Langley Park, Lincolnia, Marlow Heights, North Chevy Chase, North Springfield, Oxon Hill, Riverdale Park, Silver Hill, Silver Spring, Springfield, Takoma Park, Tysons Corner, University Park, Washington, West Mclean, West Springfield, Beltsville, Cheverly, Fairmount Heights, Fort Hunt, Greenbelt, Landover, Laurel, New Carrollton, Seat Pleasant, Chevy Chase, Mclean, St Mary's (Maryland), Rehobeth (Delaware), Chevy Chase (Maryland), Potomac (Maryland), New York State


Association of Professional Landscape Designers, Gold, Embassy Row, 2023 Home & Design, Excellence Award, Hollin Hills, 2022 Landscape Contractors Association, Alexandria Mid-Century, 2022 Virginia ASLA, Alexandria Mid-Century, 2022


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Business Details

Business Name

Horn & Co. (Previously JHLA)

Phone Number

(202) 573-7581


1408 N Fillmore St, Suite 17
Arlington, VA 22201

License Number

VA #0406001693, MD #3653


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