Herb Robert, geranio de San Roberto

G. purpureum is a synonim of G. robertianum It grows as an annual or biennial plant, producing small, pink, five-petalled flowers (about 1 cm in diameter) from April until the autumn. The leaves are fern-like, and the stems often reddish; the leaves too turn red at the end of the flowering season. The plant has little root structure.