Answer:

twiners

Answer	Crossword Clue
TWINERS	Climbing plants
TWINERS	Many climbing plants
TWINERS	Morning glories.

TWINERS	Morning-glories.
TWINERS	Trellis plants, maybe

Crossword

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