Within the valley the vegetation is bottomland hardwoods such as black ash, willow, box elder, cottonwood, and elm.
Some Native Americans traditionally make baskets from Black ash by pounding the wood with a mallet and pulling long strips from the log.
Fraxinus | Sambucus nigra | Fraxinus excelsior | Centaurea nigra | Pinus nigra | Juglans nigra | Fraxinus nigra | Fraxinus angustifolia | Carex nigra | Brassica nigra | Populus nigra | Fraxinus ornus | Tinea nigra | Prosopis nigra | Porta Nigra | ''Populus nigra'', originating in the United States from plantings by André Michaux | M. nigra | Mined leaf of ''Centaurea nigra | Leaf of ''Ballota nigra | Hoplocorypha nigra | Gila nigra | Fraxinus latifolia | Betula nigra | A shoot of ''Centaurea nigra |
It was previously thought that the larvae of this species fed on both White Ash (Fraxinus americana) and Blueberry (Vaccinium), but recent observations suggest that the only larval host plant is Black Ash (Fraxinus nigra) which grows at the edges of swamps.