Madeleine Hill did not introduce this hardy variety (she introduced 'Arp'), rather it was named in her honor, by Tom DeBaggio. Long ago we were impressed with it's healthy and hardy growth habit. Not hardy in our open fields, but then all hardy rosemaries have a difficult time overwintering here. Plant against a south wall and protect from brisk winds with something transparent (not mulch!). A well drained, gravelly soil is also critical to prevent spring root rots.