Fraxinus quadrangulata - Blue Ash
Fraxinus quadrangulata - Blue Ash

Blue Ash

Fraxinus quadrangulata

Also called Winged Ash

  • Narrow, irregular, rounded crown
  • Dark green pinnate compound leaves emerge later in the spring
  • Corky winged young twigs are distinctively four-sided
  • Drooping clusters of winged samaras ripen in the fall
  • Foliage turns pale yellow in autumn

ZONE:
4

HEIGHT:
15-20 m

SPREAD:
10-15 m

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Growing and Maintenance Tips:


Ash trees have been used in a variety of landscape settings, as street trees or lawn specimens.

While White Ash and Green Ash and their cultivars are dying due to Emerald Ash Borer, Blue Ash is showing resistance to the borer.

Additional Notes about Blue Ash:


Native to Ontario.

Early Americans made a blue dye from the inner bark, hence the common name.

Larval host for many moths and butterflies including the Mourning Cloak butterfly. The seeds, persisting well into winter, are enjoyed by large and small birds and small mammals. The twigs and foliage are consumed by deer.

Characteristics & Attributes


GROWTH RATE:
Medium
ATTRIBUTES:
Fall Color
Deciduous
HABIT:
Rounded
Oval
FOLIAGE COLOR:
Yellow
Green (dark)
LANDSCAPE USES:
Specimen

THESE PLANTS ARE

suitable substitutions for Fraxinus quadrangulata