Pleated Gentian

Gentiana affinis

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Gentianaceae
Genus:
Gentiana
Species:
Gentiana affinis
USDA Symbol:
GEAF

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
40 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jul,aug,sep
Bloom Colors:
blue, violet

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Reported Fauna Sightings

Bees: Two-form bumble bee (Bombus bifarius), White-shouldered bumble bee (Bombus appositus), Yellow bumble bee (Bombus fervidus)

Garden & Ecology Notes

Wildlife Value:
bumblebees, butterflies
Deer Resistant:
Yes

Soil Requirements

Soil Type:
moist, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers habitats like meadows and stream banks

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination; surface sow and do not cover. Cold stratification improves germination rates significantly.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI

ORGHPS Germination Guide: Expose to fluctuation outdoor winter temperatures including freezing for 3 months. Gradually increase light and temperature in the spring. * avoid pricking out individually, transplant seedlings in clumps

Source: Ontario Rock Garden & Hardy Plant Society