Enchanted Forest® River Run™ Pieris – Cascading White BloomsEnchanted Forest River Run Pieris Cascading White Blooms Before Spring Has Even Arrived When late winter still has its grip on the garden, the Enchanted Forest River Run Pieris is already putting on a show. Long, cascading chains of tiny, pearl white, bell shaped flowers drape gracefully from the branch tips appearing as early as February in mild climates creating a delicate, almost ethereal display against the glossy, deep green evergreen foliage.