Capital DomeNote: Peonies start to ship in November based on availability and your zone, unlike other products. Plant around or after your first frost but before the ground freezes. Capital Dome is a classic, bomb shaped Peony introduced in 1979 by Myron Bigger. Its huge, fully double blooms measure about 10 across and are creamy white with a faint yellow base. A soft fragrance rises from the lush petals, and the flowers appear in mid spring on sturdy 36 stems