Polemonium cuspidatum
Polemonium cuspidatum, commonly known as Jacob's Ladder, is a perennial ornamental plant that prefers part shade and medium watering. It typically grows to a height of 0.3–0.6 meters and blooms with blue, purple, and white flowers from May to July. It thrives in loamy or chalky soil and is suitable for USDA zones 3–8. This plant attracts pollinators but is not fragrant, toxic, or evergreen.
Light
Partial shade
Watering
Medium water
Soil
Loamy, Chalky
Height
0.3–0.6 m
Spread
0.2–0.4 m
Zones
3–8
Flower colors