Tall Fringed Bluebells
Mertensia ciliata
- Native to:
- United States
Jim Morefield (www.flickr.com) from Nevada, USA






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Boraginaceae
- Genus:
- Mertensia
- Species:
- Mertensia ciliata
- USDA Symbol:
- MECI3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 150 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- may,jun,jul,aug
- Bloom Colors:
- blue, pink
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★☆☆☆☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
Anicia checkerspot (Euphydryas anicia), Variable checkerspot (Euphydryas chalcedona)
Reported Fauna Sightings
Bees: Fuzzy-horned bumble bee (Bombus mixtus), Two-form bumble bee (Bombus bifarius), Yellow head bumble bee (Bombus flavifrons), Yellow-faced bumble bee (Bombus vosnesenskii) Moths:Police Car Moth (Gnophaela vermiculata)
Garden & Ecology Notes
- Wildlife Value:
- bees, hummingbirds, butterflies
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers riparian zones and wet meadows
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–60 days
- Notes:
- Seeds require cold stratification and may germinate erratically. Best sown in fall for natural stratification.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI
ORGHPS Germination Guide: Can be difficult to grow seedlings to mature plants; stratify; allow to self seed or seed in pots are suggestions