Blue Ash
Fraxinus quadrangulata
- Native to:
- Canada, United States, Virgin Islands
iNaturalist: © wdvanhem (iNaturalist #22117271)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Oleaceae
- Genus:
- Fraxinus
- Species:
- Fraxinus quadrangulata
- USDA Symbol:
- FRQU
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Tree
- Height:
- 3000 cm
- Light Requirements:
- Full Sun,Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- apr,may
- Bloom Colors:
- green, purple
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
Gypsy moth (Lymantria dispar)
Garden & Ecology Notes
- Wildlife Value:
- birds, butterflies, small mammals
- Fall Color:
- yellow, purple
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers limestone-rich soils
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 30–60 days
- Notes:
- Seeds require cold stratification for 60-90 days to break dormancy; germination occurs in spring.
Where to Buy
Nationwide Seller
- Sheffield's Seed (seeds)