100 Heirloom Mignonette (Reseda Odorata) Seeds An old fashioned favorite with 1/2”, greenish-white flowers that bloom from early summer to frost. Once an extremely important nosegay flower, especially when streets were foul smelling and sweetly scented blooms were essential! They have lots of small petals, and a mass of tufted orange stamens in the center. Clusters of flowers form loose heads that are held up on spikes and are useful for fresh flower arrangements, sachets and potpourris. This is one of our most fragrant garden flowers. Plant towards the back of the border. Direct seed in early spring. Avoid over watering mature plants. Barely cover the seeds with soil, they need light to germinate.This is one of our most fragrant garden flowers. Barely cover the seeds with soil, they need light to germinate. Germinate @ 70F. Plant towards the back of the border. Direct seed in early spring. Avoid over watering mature plants.