ferny

Etymology

From Middle English ferny; equivalent to fern + -y.

adj

1. Of, or pertaining to ferns.
2. Resembling or characteristic of a fern, in appearance, smell, etc.
3. Covered in or filled with ferns; flanked or surrounded by ferns.
   And from the bush there came the sound of little streams flowing, quickly, lightly, slipping between the smooth stones, gushing into ferny basins and out again; and there was the splashing of big drops on large leaves […] 1922, Katherine Mansfield, “At the Bay”, in The Collected Stories of Katherine Mansfield, Penguin, published 2007
   We'll walk over the spring fields and through those ferny old woods. 1939, Lucy Maud Montgomery, chapter 1, in Anne of Ingleside