Jacob's Ladder (Polemonium)
dJacob's Ladder (Polemonium caeruleum) and cultivars
Type: Perennial Hardiness Zones 3–8. Bloom Time: late spring/early summer.
Jacob's Ladder (Polemonium)
dJacob's Ladder (Polemonium caeruleum) and cultivars
Type: Perennial Hardiness Zones 3–8. Bloom Time: late spring/early summer. Height: 12 -24 in (h) Spread: 12 - 15 in Exposure: Shade to partial shade. Moist, but not wet, soil.
Soil/pH/Water: Jacob's Ladder is more fussy about moisture than about soil pH, but they will grow best in a loose, rich, well-draining soil with a neutral soil pH of about 6.2 - 7.0. Plants that receive regular watering will bloom longer and remain attractive into summer.
Maintenance: Jacob's Ladder requires minimal maintenance. The initial bloom will last 2--4 weeks, with flowers opening from the tops of the stalks down. Once the flowers finish blooming, cut the flower stalks back to the plant's base. You should get repeat blooms. If the foliage starts to look tattered, it too can be cut back and cleaned up. New growth should replace the trimmed foliage.
Fertilizing: Jacob's Ladder is a long-lived perennial. Give the plants a boost in early spring with a dose of balanced fertilizer, as the new growth is emerging. Once the faded flowers have been cut back, they can be fed again to encourage repeat blooming.
Pests & Diseases: Jacob's Ladder plants are generally problem free, but there are a few pests and diseases that will attack, particularly is t