Old man's in rustic idyll, a place to see frogs (4,3)
I believe the answer is:
lily pad
'old man's' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for lily pad that I've seen before include "Leaf of flowering aquatic plant" , "Frog's perch in lake" , "Pond feature upon which a frog may sit" , "Frog's floating home?" , "Water feature of floating leaves" .)