Poem interpretation

- "Margaret are you grieving over Goldengrove unleaving?" 

-this line simply means that a young girl named Margaret is being questioned about whether or not she feel sad about the leaves falling off the trees in the forest supposedly called Goldengrove 

"Leaves like two things of man, you with your fresh thoughts care for, can you?"

-Margaret is really young and innocent therefore she is able to care for the leaves

"Ah! As the heat grows older. It will come to such sites colder. By and by, nor spare a sigh."

-Margaret won't show the same type of sympathy that she would if or will or when she was/is older

"The worlds of wanwood leaf meal lie; And yet you will weep and knows 

why"

-Margaret won't cry over big pile of dead leaves when she grows older , She was still crying in the future but instead she'll know why

"Now no matter, child the name: sorrow springs are the same."

-The references of sadness are the same even if his younger old and it doesn't really matter what we call them

"normal head, no nor mind, expressed. What heart heard of , Ghost guessed."

- The references of sadness are hard to express even if it's for the young people or the old people

"it's the blight man was born for, it is Margaret you mourn for."

-The references of sadness happens to everyone