Answer:

ivy

Answer	Crossword Clue
IVY	College growth?
IVY	College cover
IVY	Brown, e.g.

IVY	Flora on some old buildings
IVY	Wrigley Field flora
IVY	Boston ..
IVY	Campus creeper
IVY	Campus greenery
IVY	Wall crawler
IVY	Trellis climber
IVY	Harvard or Yale

IVY	Wall climber
IVY	Trellis greenery
IVY	Trellis adornment
IVY	Wrigley greenery
IVY	Academic growth
IVY	Hanger-on at college?
IVY	Collegiate climber
IVY	Halls of ... (academe)

IVY	Novelist Compton-Burnett
IVY	University plant?
IVY	Academic hanger-on
IVY	Evergreen climber
IVY	Brown, for one
IVY	Campus wall cover
IVY	Wrigley growth
IVY	Columbia, for one

IVY	League leader?
IVY	Brown is one
IVY	Campus climber
IVY	Growth on campus
IVY	Northeastern league
IVY	Wrigley Field grower
IVY	.. League
IVY	Climbing vine

IVY	Clinging vine
IVY	Columbia, e.g.
IVY	Penn, for one
IVY	Brown, but not white?
IVY	Yale, for one

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.