Wonderfully fragrant and early blooming this ravishing plant is one of our favorite perennials. In May towering scapes to 3′ tall are topped by clusters of widely opening citrus yellow flowers. They emit a powerful perfume and the intensity ramps up at night. Blooms 3-4 weeks from a lower clump of grassy leaves. Full sun and rich soil with regular irrigation in summer. Established plants can get by on water once every two weeks. Spreads to form colonies and this markedly increases the number of blooms. The floral perfume is detectable 10′ away and actually carries on the breeze. Mix with low shrubs or include in the center of a border. Lovely species that is very long lived and low maintenance. Completely winter deciduous. The flowers are edible and taste a little like the way they smell. This species can be hard to locate. (photo credit: Evan Bean).