Gentiana clausa
Closed Gentian, Blind Gentian, Bottle Gentian
Family: Gentianaceae Gentian
| Type | Perennial |
| USDA Hardiness range | 6A - 9A |
| Exposure | Partial shade to full sun |
| Bloom color | Blue |
| Water needs | Moist |
| Landscape uses | Alpine garden, rock garden, specimen |
| Height | 6" to 8" / 15cm to 20cm |
| Spread | 18" to 24" / 45cm to 60cm |
| Growth rate | Slow |
| Persistence | Deciduous, broadleaf |
| Leaf color | Green |
| Fruit color | n/a |
| Soil pH requirements | Acidic, neutral |
| Soil type | Loamy |
| Form | Irregular or sprawling |
| Attributes and features | Attractive foilage, native to North America |