The 2018 Perennial Plant of the Year® and it is well deserved to hold that title!! Standing 18" tall in flower, it blooms its head off in midsummer and attracts a ton of pollinators that feed off of the purple flowers.  A really, really, really fantastic alternative to Liriope!!!  Unlike liriope that gets ragged in the winter and tries to stay evergreen, 'Millenium' saves you the trouble and just dies back to the ground but will retain the dried flower heads for some added, and attractive interest!