In 1985, McCrohan began cultivating White Squill bulbs gathered and selected from the region around the Mediterranean Sea by the late Dr. Howard Gentry, a former U.S.D.A. plant explorer. McCrohan continues tending and developing Urginea maritima (White Squill), as well as several other experimental cut flower and herb crops.

A Rutgers University graduate, McCrohan has worked as a full-time farmer and horticulturist for three decades. McCrohan hosts From the Ground Up, a proposed weekly half-hour TV show about farms and gardens, currently under development by A-D F Communications, an entertainment production company in Southern California.

McCrohan is also the former chairman of the City of Murrieta Planning Commission and a past member of the Murrieta/Temecula Resource Conservation District.