Polemonium (Jacob's Ladder) Seeds
Polemonium (Jacob's Ladder) is a hardy perennial that blooms in early summer. It is particularly valued for its shade tolerance. Hardy in zones 3-8.
Start polemonium seeds indoors 8 weeks before the last frost date. Barely cover the seeds with soil. Part shade or full sun with moist soil. Easy to grow.
Polemonium boreale 'Heavenly Habit' is a compact plant with attractive, ferny foliage and loads of lavender-blue flowers with yellow eyes. It blooms in early summer, and it repeat blooms if deadheaded.
Polemonium boreale's compact habit makes it a good choice for containers or the rock garden .
Polemonium caeruleum 'Blue Pearl' has deep lavender-blue flowers on tall stems above ferny foliage. It blooms in late spring to early summer.
Jacob's Ladder is one of the few shade-tolerant perennials that can be grown from seed. It looks especially lovely with yellow foxglove species such as Digitalis grandiflora .