Polemonium caeruleum var. pterospermum
Polemonium caeruleum var. pterospermum, commonly known as Jacob's Ladder, is a perennial ornamental plant that prefers part shade and medium watering. It is suitable for USDA zones 3–8 and grows to a height of 0.3–0.9 meters. This plant blooms in late spring to early summer, producing blue, purple, and white flowers. It prefers loamy, sandy, and peaty soils, is not fragrant, attracts pollinators, and is non-toxic. It is not evergreen.
Light
Partial shade
Watering
Medium water
Soil
Loamy, Sandy, Peaty
Height
0.3–0.9 m
Spread
0.3–0.6 m
Zones
3–8
Flower colors