Due to susceptibility to emerald ash borer (EAB), European ash is not recommended for planting anywhere in this region and usually requires removal and/or replacement. European ash is a large shade tree found throughout Europe which is hardy to the Midwest. Currently, ash trees cannot be sold in Illinois. Check with your state for quarantine restrictions.
- Deciduous (seasonally loses leaves)
- Large tree (more than 40 feet)
- Full sun (6 hrs direct light daily)
- Zone 5 (Chicago),
- Zone 6,
- Zone 7,
- Zone 8
- Moist, well-drained soil
- Moderately Tolerant
- Fall color,
- Persistent fruit/seeds
- Early fall
- Insect pollinators,
- Migrant birds
Tree & Plant Care
Full sun and moist, well-drained soils.
Disease, pests, and problems
Susceptibility to the emerald ash borer makes this tree unsuitable for the landscape.
This species is also very susceptible to attack from the native ash borer.
Native geographic location and habitat
Native to Europe and Asia.
Bark color and texture
The bark is light gray and relatively smooth on young trees, becoming tightly ridged and furrowed on older trees.
Leaf or needle arrangement, size, shape, and texture
Compound leaves are in pairs (opposite), with 7 to 11 leaflets on each leaf.
Leaves are dark green in summer, changing to yellow green or a mild yellow in fall.
Flower arrangement, shape, and size
Not ornamentally important. Male and female flowers may be on same tree or on different trees.
Flowers appear in spring.
Fruit, cone, nut, and seed descriptions
Fruits are winged seeds borne in clusters.