Who sung this song? "A Tree and Me"

Who sung "A Tree and Me"?
These are the lyrics

PLEASE CARVE NO COLD HEADSTONE FOR ME,
BUT RATHER PLANT A SAPLING TREE;
AND LAY MY ASHES `NEATH ITS FOOT,
SO THROUGH MY BODY IT TAKES ROOT.
THEN AS THE SEASONS COME AND GO,
MY MONUMENT AND I WILL GROW;
WAVE BRIGHT GREEN FLAGS AT SUMMER`S SKY,
AND HARBOR BIRDS WHO HAPPEN BY.
WE`LL BRONZE EACH AUTUMN BLOOM WITH SPRING,
AND WEAR THE WHITE COATS WINTERS BRING.
THE TREE I MARRY WITH MY DUST,
WILL HUSBAND ME WITH ROOTED THRUSTS.
OUR SEED WILL SCATTER FAR AND WIDE,
ACROSS GOD`S FERTILE COUNTRYSIDE;
AND SOON AN ARBOR FAMILY
WILL SHARE OUR IMMORTALITY,
A TREE AND ME,
A TREE AND ME.