Robust 'Blue Fortune' is a mass of soft powder-blue flower spikes from July onwards, making it a magnet for butterflies and admiring visitors alike. The well-branched stems require no cutting back as the season progresses, and they are a great addition to bouquets. A Royal Horticultural Society Award of Garden Merit plant. Agastache is a genus of about 30 aromatic species native to central and eastern Asia, Mexico, and the United States. Careful breeding and selection have given us newcomers that offer exceptional garden performance and a long season of bloom. In full sun and well-drained soil, they happily shrug off summer heat and early frosts