Polemonium boreale var. macranthum
Polemonium boreale var. macranthum, known as Jacob's Ladder, is a perennial ornamental plant that prefers part shade and medium water conditions. It typically grows between 0.3–0.6 meters tall and blooms with blue and purple flowers from May to July. This plant thrives in loamy, peaty, or sandy soils and is suitable for USDA zones 3–8. It attracts pollinators but is not fragrant, toxic, or evergreen.
Light
Partial shade
Watering
Medium water
Soil
Loamy, Peaty, Sandy
Height
0.3–0.6 m
Spread
0.3–0.5 m
Zones
3–8
Flower colors