What is "perennials"

Usage examples of "perennials".

Ma was leaning toward the English-cottage style, with lots of perennials and winding paths and general chaos-you know -but I think it ought to be more formal.

It was the time of year for cutting, and clearing, and there were great patches of browning Michaelmas daisies, phlox and other perennials giving striking evidence of neglect.

But he started talking about the difference between perennials and annuals and how to overcome my problem.