EBarnacle said:

"Not too long ago, I heard that asparagus derived from "Sparrow Grass." I don't know whether it is true or not. "

According to ORIGINS, A Short Etymological Dictionary of the English Language,
"asparagus: adopted from Latin, from Greek asparagos or aspharagos, originally a shoot or sprout, akin to Avestic sparegha, a sprout: asparagos could represent a- for ana, up+sparganto swell. (Boisacq)."

No sparrow grass. Sorry. "Folk etymology" is fun, but don't rely on it.

Dave Oesterreich