Mertensia pterocarpa

Mertensia pterocarpa

Native to:
Japan | Kuril Is.

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Boraginaceae
Genus:
Mertensia
Species:
Mertensia pterocarpa

Growth Characteristics

Growth Habit:
Forb/herb
Height:
60 cm
Drought Tolerance:
Low
Bloom Colors:
blue

Keystone Species Ranking

Caterpillar Keystone:
★☆☆☆☆ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies

Source: DeepSeek deepseek-chat

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
30–60 days
Notes:
Seeds benefit from cold stratification for 2–3 months to break dormancy.

Source: DeepSeek deepseek-chat

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society