Horn & Co.

Jennifer Horn’s interest in botany stems from time spent as a child living in Malaysia, where she played in a garden full of mango trees and orchids. A high school job at a nursery inspired her to earn a degree in horticulture followed by a master’s in landscape architecture. After practicing in New York for 11 years, she moved to the DC area and launched her firm in 2009.

Horn & Co. collaborates with homeowners to create designs that are a natural extension of the house, the personalities of the clients and the environment. The firm considers how the use of a landscape will change over time. “Garden design is temporal,” Horn observes. “We think about how gardens change seasonally, but also of how they’ll change over years.”

The social and environmental impact of a site are primary considerations. Horn is committed to green design, prioritizing local materials and ethically sourced products. “Enhancing the beauty of the natural world comes with a commitment to minimize negative impacts on the environment,” she notes.

Horn & Co. has received numerous awards from APLD and regional ASLA chapters as well as Home & Design, Annapolis Home and Interiors Mid-Atlantic. In 2026, the firm added an office in Middleburg, Virginia.

See more at HandD.com/JenniferHorn