Didn’t managed to find some ‘offical’ list. So checked which companies are the most often ASLA awarded (and therefore professionally recognized) and here is the list (alphabetical ordered).
AECOM Design + Planning
Andrea Cochran Landscape Architects
Burt Hill, Inc.
Design Workshop, Inc.
EDSA, Inc.
Gustafson Guthrie Nichol, Ltd,
Jones & Jones Architects and Landscape Architects, Ltd
Landworks Studio Inc.
MESA Design Group
Michael Van Valkenbugh Associates, Inc.
Olin Partnership, Ltd.
Sasaki Associates, Inc.
SWA Group (Houston, TX)
Wallace Roberts & Todd, LLC
Any comment/addition especially from the side of American Landscape Architects would be highly appreciated.
Thanks in advance!
Cheers!