Bottle gentian
Gentiana clausa
Bottle gentian is a stunning native wildflower that produces deep blue, closed-bottle-shaped blooms in late summer and fall, making it a standout in shade or woodland gardens. It requires consistently moist, acidic, humus-rich soil and does not tolerate drought or heavy clay. This plant can be finicky to establish but rewards patient gardeners with striking, long-lasting color and excellent pollinator value.
Care Level
High
Sun
Partial Shade
Water
Moderate
Growth Rate
Fast
Mature Height
12″ – 48″
Soil
loam
Life Cycle
Perennial
Spacing
12″
Flowers
purple
Watering Schedule
Every 5-7 Days • Water Consistently To Keep Soil Evenly Moist; Do Not Allow To Dry Out Between Waterings
Soil pH
5.8 – 7.2
Temperature
-25° – 95°F
Mature Spread
up to 48″
Root Depth
Medium
Foliage
Coarse
Propagation: Seed, Division, Cutting
Native to
Attracts
Sources
Data: trefle, usda
Image: trefle.io — Taken Oct 16, 2013 by EOL − Ann Walter-Fromson (cc-by-nc)
No nurseries currently have this species in stock.