Polemonium caeruleum
Jacob's Ladder, Charity, Greek Valerian
Family: Polemoniaceae Phlox
| Type | Perennial |
| USDA Hardiness range | 3A - 8A |
| Exposure | Partial shade to full sun |
| Bloom color | Blue |
| Bloom time | Late Spring to Mid Summer |
| Water needs | Moist |
| Landscape uses | Container, massing, rock garden, specimen, woodland garden |
| Height | 18" to 30" / 45cm to 75cm |
| Spread | n/a |
| Growth rate | Moderate |
| Leaf color | Green |
| Fruit color | n/a |
| Soil pH requirements | Neutral |
| Soil type | Loamy |
| Form | Upright or erect |
| Attributes and features | Attractive foilage |