with …

twigs=◼︎ square w/corky wings;  bark=breaks into plates;  seed is ½ length of helicopter wide wing
◼︎ blue ash  Fraxinus quadrangulata

OR they are NOT, but with …
leaf scar[?] shape= horseshoe;  bark=ridged with narrow--diamond-shapes
◼︎ white ash  Fraxinus americana

OR they are NOT (leaf scar shape= semicircle or oval), but with …
twigs=rusty hairy;  buds=rusty hairy;  outer-bark inner-face=​reddish
◼︎ red ash  Fraxinus pennsylvanica

OR they are NOT, but with …
buds=near-black;  bark=smooth can-be-rubbed-off
◼︎ black ash  Fraxinus nigra

OR they are NOT, but with …
buds=red-brown;  bark=ridged firm;  leaf scar[?] shape=D◗
◼︎◼︎ red ash variant green ash  Fraxinus pennsylvanica

Learn more about ash genus Fraxinus (Fraxinus spp.)

Part of ash / lilac / olive  family Oleaceae.

Uses by native peoples
(Ethnobotany database)

Fraxinus hosts caterpillars of 150 species
of butterflies and moths, in some areas.

Formerly abundant in much of North America and Europe, in much of their ranges, all native ash trees with stem diameter over 2½ cm (1 in) (taller than a basketball hoop or so) have been or are now being killed by parasitic insect emerald ash borer (EAB)  Agrilus planipennis.

Although we hear that some communities and homeowners have protected their favorite adult ash trees through annual treatments.  Details?

Native alternatives for ash trees killed by EAB (Missouri Botanical Garden).

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Michigan Flora Minnesota Wildflowers Flora of North America NRCS PLANTS db Wikipedia