Water Ash
Fraxinus nigra
Last reviewed: June 2026
The USDA PLANTS Database (opens in new tab) does not flag Water Ash as toxic to livestock.
Light
part sun
Water
high
Size
360"–720" H × 240"–480" W
Bloom
May, Jun
Native to
CT, DE, IA, IL and 16 more states
Pollinators
bees, beetles
Water ash is a medium to large native tree that thrives in moist soils and wet areas. This deciduous tree produces small flowers in late spring and develops an oval to rounded crown as it matures.
In an HOA neighborhood
Water Ash is an HOA-friendly choice. Maintenance level: moderate. Tidiness: 4 out of 5.
Works well in: front yard, street edge, mid zone.
- Requires consistent moisture which may limit placement options
Wildlife value
The flowers attract bees and beetles during the blooming period in May and June. As a native ash species, it provides habitat and food sources for various wildlife.
Common questions
- How much sun does Water Ash need?
- Water Ash grows best in part sun conditions.
- When does Water Ash bloom?
- Water Ash blooms in May and June.
- Where is Water Ash native?
- Water Ash (Fraxinus nigra) is native to CT, DE, IA, IL and 16 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Water Ash toxic to livestock?
- The USDA PLANTS Database does not flag Water Ash as toxic to livestock.
- What pollinators does Water Ash attract?
- Water Ash draws bees and beetles.
- Is Water Ash HOA-friendly?
- Water Ash is generally an HOA-friendly choice in the right placement, with moderate maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Water Ash? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz