1.  ferny(a = adj.all) ferned - abounding in or covered with ferns; "the ferny undergrowth"
Derived form noun fern₁

2.  ferny(s = adj.all) fernlike - resembling ferns especially in leaf shape; "the ferny shadows of locust leaves"
Derived form noun fern₁

1.  Abounding in ferns. [1913 Webster]

2.  resembling a fern; fernlike. [PJC]