Also known as Andrews' Bottle Gentian · Andrews' Gentian · Blind Gentian
Closed Bottle Gentian (Gentiana andrewsii) is a captivating native perennial with striking, deep blue, urn-shaped flowers that remain closed.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
50% intensity
Thrives in full sun to partial shade. In hotter climates, afternoon shade is beneficial to prevent wilting.
Consistent Moisture
75% intensity
Prefers consistently moist soil, but avoid waterlogged conditions. Water when the top soil is dry.
Moist, well-drained loam
50% intensity
Cool to Moderate
50% intensity
Prefers cooler temperatures, especially during summer. Protect from extreme heat.
Light Feeder
25% intensity
Apply a balanced, slow-release fertilizer sparingly in spring. Over-fertilization can be detrimental.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist, especially during the growing season. Water thoroughly when the top inch of soil feels dry. Avoid waterlogging, as this can lead to root rot.
Reduce watering in the fall as the plant enters dormancy, but do not allow the soil to dry out completely.
Deadhead spent flowers to encourage a tidier appearance and potentially more blooms. After flowering or in late winter/early spring, trim back any dead or damaged foliage.
This plant does not require significant pruning for shape, focusing instead on maintaining health.
Easily propagated by division in early spring before new growth appears. Sow seeds outdoors in fall or stratify them indoors for spring sowing.
Cuttings can be taken in late spring or early summer from non-flowering shoots, but this method is less common for home gardeners.
Established plants generally prefer to be left undisturbed. If repotting is necessary, do so in early spring before new growth begins. Use a well-draining, slightly acidic to neutral soil mix.
Gentians appreciate a cool root zone and may benefit from being planted in a pot with good drainage.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Closed Bottle Gentian (Gentiana andrewsii)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Gentianaceae |
| Genus | Gentiana |
| Species | Gentiana andrewsii |
Similar in genus Gentiana
Answers based on plant encyclopedia data
