Oblongleaf Bluebells
Mertensia oblongifolia
- Native to:
- United States
Matt Lavin
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Boraginaceae
- Genus:
- Mertensia
- Species:
- Mertensia oblongifolia
- USDA Symbol:
- MEOB
Growth Characteristics
- Life Cycle:
- Annual | Perennial
- Growth Habit:
- Forb/herb
- Height:
- 40 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- apr,may,jun,jul
- 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
Caloreas augustella, Gnophaela latipennis
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, hummingbirds
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rocky, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- thrives in alpine and subalpine regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–90 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds require cold stratification and may germinate erratically. Best sown in fall for natural winter stratification.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: The protocol does not provide specific information on propagation source, pre-treatment, establishment protocol, temperature, germination rate, or germination time for Alopecurus alpinus.
Source: npn.rngr.net
ORGHPS Germination Guide: Can be difficult to grow seedlings to mature plants; stratify; allow to self seed or seed in pots are suggestions