Q. What was the date of PHS's first Flower Show in 1829?
Your email sent to our member services department was forwarded to me here in the PHS McLean Library – unfortunately, our library page is somewhat buried on our web site, which is why you failed to find it.
The Pennsylvania Horticultural Society was founded in 1827 by a group of gentleman farmers, civic leaders, botanists and nurserymen. Monthly meetings included exhibitions among members. PHS held the first public flower show in America in June 1829 in the Masonic Hall on Philadelphia’s Chestnut Street. It was a one-day exhibition of fruits, flowers, and plants, and included the introduction of the Poinsettia, recently imported from Mexico, to the American public.
I attach an article that appeared in the March 2000 issue of The Green Scene, “Yesterday’s Flower Show” by Wilbur Zimmerman (pp. 24-27). It is a description of our first show, held June 6, 1829.
See also the description of this first show on p. 43 of James Boyd's A history of the Pennsylvania Horticultural Society, 1827-1927, Philadelphia, Printed for the Society, 1929.