Due to its susceptibility to emerald ash borer (EAB), black ash is not recommended for planting anywhere in this region, and usually requires removal and/or replacement. Black ash is a medium-sized, native tree adaptable to wet sites. This species is native to the Chicago region according to Swink and Wilhelm’s Plants of the Chicago Region, with updates made according to current research.
- Family (English) Olive
- Family (botanic) Oleaceae
- Tree or plant type Tree
- Foliage Deciduous (seasonally loses leaves)
- Native locale Chicago area, Illinois, North America
- Size range Large tree (more than 40 feet)
- Mature height 40-50 feet
- Mature width 20-35 feet
- Light exposure Full sun (6 hrs direct light daily)
- Hardiness zones Zone 2, Zone 3, Zone 4, Zone 5 (Northern Illinois)
- Soil preference Acid soil, Wet soil
- Tolerances Alkaline soil, Clay soil, Occasional flooding, Wet sites
- Season of interest early fall
- Flower color and fragrance Inconspicuous
- Shape or form Narrow, Open
- Growth rate Slow
- Transplants well Yes
- Planting considerations Highly susceptible to ice damage
- Wildlife Browsers, Game birds, Insect pollinators, Migrant birds, Songbirds
- Has cultivars Yes