Landreth, David, Jr.–(1802-1880)–Philadelphia, Pennsylvania; Bristol, Pennsylvania–made the Landreth seed business the leading seed house in America.   His first business experience was in Charleston, South Carolina where there was a branch house that flourished until it closed in 1862 because of the Civil War.  In 1828, he succeeded his father as proprietor of the seed establishments under the name D. Landreth & Co.  The nurseries were under Thomas Landreth.    David, Jr. was a founder of the Pennsylvania Horticultural Society and in 1832 published Floral Magazine, America’s first horticultural journal.  It featured color lithographs.  In 1835, Commodore Perry took a box of American seeds to give to the Japanese as a gift from the Landreth company.  The Japanese sent back some seeds in return. In 1847, the Landreth nursery was moved to Bloomsdale in Bristol, Pennsylvania.  Bloomsdale became the most complete seed farm in America and an arboretum was also established.  Burnet Landreth, David, Jr.’s son,  was involved with international expositions and societies and wrote for horticultural journals.  The Landreths used patriotism to sell seeds.  In one catalog they offered a “jewel case” of inlaid wood containing twenty packets of flower seeds.  Vegetables were a specialty, with cooking notes included.  Lithographs of vegetables were a major feature of the early catalogs.  By the 1880s the Landreths were commenting on changing American values–one issue discussed was that practical horticulture was no longer required in public schools.
Sources: Woodburn2; Bailey; PHS2; PHS1; Art Gar; CP; CLG; Kellen; DAB; Hedrick; Wright