Yellow Scabiose or Alpine Scabious (kef-a-LAH-ree-a: al-PEEN-a) Dipsacaceae:
The genus name is from the Greek word kephale, meaning 'a head'. Cephalaria alpina is a clump forming with long wiry stems that can be 3 to 6 feet tall. The clumps are up to 2 feet wide and they can be dived up every few years. Plants fit in well in a mixed border with shrubs and ornamental grasses. Cephalaria alpina starts to bloom in late spring with Scabiosa-like yellow flowers. The seeds are large and easy to sow, plants will bloom the second year.
Sow the seeds and thinly cover them with soil medium. Use cool soil temps for germination, somewhere between 41 and 55F. The germination period is irregular, often taking place over a month or two.