- Name: Fringed Gentian - Other Common Names: Blue Gentian / Greater Fringed Gentian / Gentiana - Scientific Name: Gentianopsis Crinita Syn. Gentiana Crinita - Color: Bright Blue – Purple - Plant Seeds: Outdoors After Frost / Fall / Cold Stratify / Indoors Weeks Before Last Frost - Plant Height: 12 - 18" - Plant Spacing: 18 - 24" - Bloom Time: Late Summer – Fall - Hardiness Zone: 3 – 8 - Light Requirements: Sun (Part Shade) - Soil & Water Preferences: Average – Wet - Quantity: 200 Seeds