Overview
Fraxinus quadrangulata is a spreading branched trees in the genus Fraxinus, part of the Oleaceae family, with deciduous foliage. Fraxinus quadrangulata grows best in full sun, and tolerates most soils and alkaline and neutral pH. Its UK hardiness is rated H6. Suggested uses include coastal, cottage and informal garden and wildlife gardens.
About
Fraxinus quadrangulata, the blue ash, is a species of ash native primarily to the Midwestern United States from Oklahoma to Michigan, as well as the Bluegrass region of Kentucky and the Nashville Basin region of Tennessee. It is typically found over calcareous substrates such as limestone, growing on limestone slopes and in moist valley soils, at elevations of 120–600 m (390–1,970 ft). In the garden it prefers full sun and most soil types. In UK gardens it is very hardy across most of the UK (RHS H6). Suggested uses include coastal, cottage and informal garden and wildlife gardens. It tolerates alkaline and neutral soils, moist but well-drained conditions and east-facing, south-facing and west-facing aspects. Plant in well-drained soil. Stake when young.
Wikipedia contributors, CC BY-SA 4.0 — Fraxinus quadrangulata
Growing conditions
Best soil and position for Fraxinus
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Sand, Loam
- Soil pH
- Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
Fraxinus quadrangulata size, habit and characteristics
- Plant type
- Trees
- Habit
- Spreading branched
- Foliage
- Deciduous
- Suggested uses
- Coastal, Cottage and informal garden, Wildlife gardens
Care notes
Pruning and caring for Fraxinus quadrangulata
- Propagation
- Propagate by seed or grafting
- Pest resistance
- Generally pest-free
- Disease resistance
- Ash dieback has recently been found in the UK. Restrictions have been put in place (from 29 October 2012) regarding both the importation of ash from abroad and the movement of ash within the UK. May also be susceptible to honey fungus
Frequently asked questions
Where is the best place to plant Fraxinus quadrangulata?
Fraxinus quadrangulata prefers full sun. It suits exposed and sheltered positions.
What soil does Fraxinus quadrangulata need?
Fraxinus quadrangulata is adaptable and grows happily in most soil types, including chalk, clay, sand and loam. It prefers alkaline and neutral soil. Aim for soil that stays moist but well-drained.
Is Fraxinus quadrangulata hardy in the UK?
Fraxinus quadrangulata has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Fraxinus quadrangulata?
Propagate by seed or grafting.
More in the Fraxinus genus
- Fraxinusash
- Fraxinus angustifolia 'Monophylla'
- Fraxinus angustifolia 'Pendula'ash 'Pendula'
- Fraxinus angustifolia 'Variegata' (v)
- Fraxinus angustifolia subsp. oxycarpa 'Golden Desert'
- Fraxinus angustifolia subsp. syriacaSyrian ash
- Fraxinus baronianaBaron's ash
- Fraxinus chinensisChinese ash
