White Ash
Fraxinus americana L.
Fréne blanc
Native Range: Most common Eastern native ash.
Leaves: 5 ⇔ 9 (average 7) leaflets roughly 6 ⇔ 15 centimeters in length.. Central stalk 15 ⇔ 25 centimeters.
Oval to lanceolate, ends taper.
Margins smooth/can have rounded teeth.
Dark green top, pale underside, veins have hairs.
Leaves turn bronze-purple in autumn.
Fall colour is distinctive bronze purple.
Buds: Terminal bud 0.5 ⇔ 1.4 centimeters, more broad than long, 4-sided, tight, pointed, reddish brown.
(Refer to similar species to see the difference between White Ash and Black Ash. White (and Green) lateral bud are tight to terminal bud with no space. Black Ash has a space, very easy to spot once you see it!)
Twigs: Stout, shiny, purplish, or with a grayish skin, hairless.
Flowers: Purple in color.
Pollen flowers and seed flowers are on separate trees.
Fruits:
2.5-5 cm long, with the wing enclosing only the tip of the seedcase.
Good seed crops occur approximately every 3 years.
Bark: Light gray, finely furrowed into thin, firm, intersecting ridges that form a regular diamond pattern.
Wood: Heavy, straight-grained, hard, strong, tough, and light brown.
Size and Form: Medium-sized trees, up to 30 m high, 150 cm in diameter, and can live up to 200 years.
An erect and graceful tree, with a long, straight trunk that is often branch-free almost to the top.
Crown is narrow and pyramidal.
Root system is deep where soil conditions allow.
Habitat: Typically grows on deep, well-drained, upland soils, mixed with other broadleaf trees and occasional conifers.
Moderately shade-tolerant.
Notes: White ash populations sometimes experience declines, exhibiting a progressive dieback known as "ash yellows." These declines are likely triggered by climate-induced stress, which makes the trees more susceptible to other damaging agents.
The main source of commercial ash wood.
Such a beautiful tree, especially with that autumn coloration! The wood is a highly valued resource too.
White Ash (Aw)
Fraxinus americana L.
Fréne blanc
Native Range: Most common Eastern native ash.
Leaves: 5 ⇔ 9 (average 7) leaflets roughly 6 ⇔ 15 centimeters in length.. Central stalk 15 ⇔ 25 centimeters.
Oval to lanceolate, ends taper.
Margins smooth/can have rounded "teeth".
Dark green top, pale underside, veins have hairs.
Leaves turn bronze-purple in autumn.
Fall colour is distinctive bronze purple.
Buds: Terminal bud 0.5 ⇔ 1.4 centimeters, more broad than long, 4-sided, tight, pointed, reddish brown.
(Refer to similar species to see the difference between White Ash and Black Ash. White (and Green) lateral bud are tight to terminal bud with no space. Black Ash has a space, very easy to spot once you see it!)
Twigs: Thick, shiny, purple/grayish, hairless.
Flowers: Purple in color.
Pollen flowers and seed flowers are on separate trees.
Fruits:
2.5 ⇔ 5 centimeters length
Good seed crops occur approximately every 3 years.
Bark: Light gray, finely furrowed into thin, firm, intersecting ridges that form a regular diamond pattern.
Wood: Heavy, straight-grained, hard, strong, tough, and light brown.
Size and Form: Medium sized... 30 m high, 150 cm diameter
Live up to 200 years.
Long straight trunk often no branches except the top.
Crown is narrow and pyramidal.
Root system is usually deep (soil conditions permitted).
Habitat: Deep, well drained, upland soils, mixed with other broadleaf trees and occasional conifers.
Moderately shade tolerant.
Notes: Declines initiated by climate-induced stress.
The main source of commercial ash wood and highly valued because of this.