No founder, establishment record, or first observance is documented for Plant Something Day. A widely repeated claim that a national horticulture body created it is contradicted by that body's own published history.
The nursery came before the holiday
American horticulture has a starting point, and it is not a marketing campaign. Smithsonian Gardens dates the first modern commercial nursery in the country to 1737, when Robert Prince opened one at Flushing, New York, with his son William; even that date is softer than it looks; the Arnold Arboretum's account has Robert propagating trees for his own fruit farm by 1723, with the business turning commercial slowly around him; there was no launch, only a man, eight acres and a growing list of trees.
The list survives. William Prince's first known advertisement ran on September 21, 1767, offering apple, plum, peach, nectarine, cherry, apricot and pear; his first catalogue followed four years later, a single sheet of paper carrying more than 230 plant selections.


