Saint Valentine's Day Postcard

—John Donne, Epithalamion Vpon Frederick Count Palatine and the Lady Elizabeth marryed on St. Valentines day
The verse Roses are red echoes conventions traceable as far back as Edmund Spenser's epic The Faerie Queene (1590):
She bath'd with roses red, and violets blew,
And all the sweetest flowres, that in the forrest grew.