J. Mendoza Gardens (JMG) is a design/build firm known for its solutions to the complicated design problems of urban rooftops/penthouses. JMG serves as the landscape architectural design division of Blondie's Treehouse. Working within the confines of restrictive weight allowances, climate variations and regulatory hurdles, a JMG design transforms problematic spaces into unique and stunning landscapes. BTH is one of the largest horticultural firms in the United States, with a warehouse and greenhouse facilities in Mamaroneck and design/sales offices in Manhattan.