Bottle Gentian Seeds – 100 Gentiana andrewsii for Perennial Pollinator Gardens

Bottle Gentian (Gentiana andrewsii) is a striking native perennial known for its unique, bottle-shaped blue flowers that remain closed and are pollinated primarily by bumblebees. This late-season bloomer adds a distinctive touch to woodland gardens, pollinator plantings, and moist meadow landscapes. Its deep blue-violet blossoms appear from late summer into fall, providing a valuable nectar source when many other plants have finished flowering.

Growing up to 1-2 feet tall, Bottle Gentian forms a clump of smooth, lance-shaped green leaves and thrives in consistently moist soils. It is an excellent choice for rain gardens, stream banks, and shaded borders where its unusual flowers can be appreciated up close. Though slow to establish, this long-lived perennial rewards patient gardeners with years of late-season interest.

Plant Features

• Unique, closed bottle-shaped flowers in deep blue-violet
• Late summer to fall bloom season
• Attracts bumblebees and other pollinators
• Native to North American meadows and woodlands
• Long-lived perennial that naturalizes in moist areas

Growing Information

• Botanical Name: Gentiana andrewsii
• Plant Type: Herbaceous perennial
• Sunlight: Full sun to partial shade
• Soil: Moist to wet, well-drained loam
• Water Requirements: Moderate to high; keep soil consistently moist
• Growth Habit: Upright, clump-forming
• USDA Hardiness Zones: 3-8
• Bloom Season: Late summer to fall
• Mature Height: 1-2 feet
• Spacing: 12-18 inches apart

Planting & Care

Sow Bottle Gentian seeds indoors in late winter or early spring. Surface sow or lightly cover with a thin layer of soil, as light may aid germination. Maintain a temperature around 65-70°F (18-21°C) and keep the medium evenly moist but not waterlogged. Germination can be slow and uneven, often taking several weeks to a few months. For best results, cold stratify seeds for 4-6 weeks before sowing.

Once seedlings have developed true leaves, transplant them into individual pots and grow on in a bright, cool location. Harden off gradually before planting outdoors in a moist, humus-rich site. Water regularly during the first growing season to help establish a deep root system. Apply a layer of mulch to conserve moisture and keep the soil cool. Avoid allowing the soil to dry out completely, especially during hot weather.

What's Included

100 Bottle Gentian (Gentiana andrewsii) seeds.