An airy, see-through plant that has long-lasting flowers is something to be treasured. Patrinia scabiosifolia has umbels of bright-yellow flowers that resemble those of fennel or dill but, unlike them, it continues to flower throughout the summer. I grow it in large groups underneath the towering stems and dark blue flowers of Salvia guarinitica ‘Black and Blue’. It is often suggested as a companion to Verbena bonariensis but I find it too strident for the muted tones of the verbena flowers. The basal foliage is coarse and thick and holds no attraction until the autumn when it turns copper and gold. I keep it hidden amongst other plants.
A native of Korea and Japan, it grows to about 1.2m tall and prefers sunny, well drained conditions. Once established, it will survive periods of drought.