Borage not only an excellent Herb used in tea form but a great Companion Plant, Tomatoes thrive with it around, as does Squash and Strawberries.
Its flowers bring bees into the Garden that will pollinate other plants. It can get a bit large so plant in a corner where it won't take over, otherwise pinch the tops out to stop it from getting to big.
Borage self seeds so will return year after year, the leaves make a great Herbal Tea and the flowers look nice frozen in ice cubes in the Punch Bowl.
Be Happy,
Barry