Does anyone know what song this is? [View all]

Parts of this song have been going around in my head for three days now and I would like to know the name of it or who sings it. Please help me!
Here is what’s going around my head… the words may not be as exactly in the song:

… where are the daffodil mountains
that bloom in the late days of April?
I know that they must be
…. out there in the garden …

I’ve tried lyrics searchers but they were no help!
Thanks for your help!