In 1991 Jennifer Horn was hired for part time work at a plant nursery in Northern Virginia.  Within months she became hooked, and decided to study horticulture at Virginia Tech and to then pursue a Masters in Landscape Architecture from University of Georgia. 

From 1999 until 2009 Jennifer practiced landscape architecture in New York City.  Her professional experience included designing zoo exhibits for the Bronx Zoo; developing the ecological program for Fresh Kills Park on behalf of New York's Department of City Planning; and designing gardens, estates and parks for Edmund Hollander Landscape Architect and Deborah Nevins Associates

Jennifer is a regionally licensed landscape architect (Virginia, Maryland and Washington, DC) as well as in New York state.  Since founding JHLA in 2009, Jennifer has continued to design luxury landscapes for residences, communities and resorts. Active projects involve constant collaboration with local architects and contractors for projects in DC and the surrounding municipalities. Other projects include school courtyard designs for communities in Ocean City, New Jersey and Queens, New York. JHLA has also provided strategic planning documents for communities both near and far (Fairfax, Virginia and Lanai, Hawaii) so that the landscapes respond to the existing ecological conditions as responsibly (and beautifully) as possible. 

For every project, JHLA vigilantly adheres to the guiding principle that a landscape should respond to its adjacent architecture and its social and natural histories.



Reuben Herrera is a 2013 graduate from West Virginia University with a bachelor's in Landscape Architecture. After college, Reuben began working for a design-build firm in Doylestown, PA working in the surrounding counties and New Jersey where he gained substantial knowledge of installation, construction and management of high end residential landscape projects.

In 2015 Reuben made his way down to the DMV to join JHLA. Since becoming a member of the team, Reuben has worked his way up to project manager and enjoys working with clients on projects of all shapes and sizes. In his free time Reuben enjoys biking the area, watching and attending football games and occasionally sneaking into the Smithsonian National Zoo at night to grapple with the bears.


Edy was born and raised in the rural area of Jutiapa, Guatemala. At a very young age Edy developed a passion for nature by working with his father in his fields. In 2007 Edy graduated with a degree in Agronomy from the Central National School of Agriculture in Barcenas, Guatemala.  After graduating Edy worked for MayaCrops S.A., a major agricultural enterprise managing the irrigation systems of its headquarters in San Jose Pinula, Guatemala. From 2011 to 2014, Edy worked at Behnke’s Nursery in Beltsville, Maryland providing customer service assistant throughout the retail areas managing the design build of their interior landscapes and major plant displays.

Edy recently obtained his degree in Landscape Architecture from the University of Maryland College Park. Simplicity, elegance and an assimilation of local species into natural settings are characteristics Edy likes to implement into his designs.  Edy Ruano joined JHLA in February of 2017.