Polemonium caeruleum. This beautiful perennial is famous for its ascending leaf formation and showy bright, deep blue flowers in late spring. Medicinally, it is used to treat headaches and nervous upset. Easy from seed.
Polemonium caeruleum. This beautiful perennial is famous for its ascending leaf formation and showy bright, deep blue flowers in late spring. Medicinally, it is used to treat headaches and nervous upset. Easy from seed.