And thou shalt have roses in December

There are still five roses out in my garden and I hope they will survive until Advent. Do you know this poem by Robert Frost?

The rose is a rose,
And was always a rose.
But now the theory goes
That the apple's a rose,
And the pear is, and so's
The plum, I suppose.
The dear only knows
What will next prove a rose.
You, of course, are a rose
But were always a rose.