The Perennial Plant Association has awarded the title Perennial Plant of the Year® 2018 to Allium ‘Millenium’.
This herbaceous perennial, relative to the common onion, is a workhorse of the late summer garden. Bred by Mark McDonough, horticulture researcher from Massachusetts, ‘Millenium’ was introduced through Plant Delights Nursery in 2000 where it has proven itself year after year earning rave reviews. ‘Millenium’ is spelled with one “n”, as registered, but is occasionally incorrectly listed with two “n”s. This cultivar is the result of a multigenerational breeding program involving Allium nutans and A. lusitanicum (formerly Allium senescens ssp montanum), selected for late flowering with masses of rose-purple blooms, uniform habit with neat shiny green foliage that remains attractive season long, and for its drought resistant constitution.
Article and photo SOURCE: http://www.perennialplant.org/index.php/component/k2/item/198-2018-perennial-plant-of-the-year