Fraxinus Pennsylvanica

Fraxinus pennsylvanica - Green Ash (Oleaceae) --------------------------------------------------------------------------------- Fraxinus pennsylvanica is a common, upright- to -lower branches become pendulous with age and curve irregularly- shaped shade tree of rapid growth rate and upward at their ends infrequent bright yellow autumn foliage. Green Ash is -species tends to be more twiggy than White Ash widely planted due to its urban tolerance, including areas Trunk exposed to winter salt spray. -gray-brown bark is composed of flaky thin strips in youth, becoming deeply furrowed and ridged with age, FEATURES with the ridges interlacing to form a diamondback Form pattern -large deciduous tree -the furrowed pattern appears in smaller diameter -maturing at 50' tall x 30' branches than in White Ash wide -upright oval growth habit, USAGE becoming rounded to Function irregular with age -shade, street tree, or wet site tree -rapid growth rate Texture Culture -medium texture in foliage and medium-bold when bare -full sun -thick density in foliage and when bare (at maturity) -prefers moist, well-drained Assets soils but is adaptable to -quick growth for a shade tree poor soils, soil pHs, -urban tolerance (including salt tolerance) drought, pollution, soil -ornamental bark compaction, and salt spray Liabilities (very urban tolerant) -some pest and disease problems -propagated primarily by cuttings grafted onto seedling -interior shading leads to dead stem litter understock -surface roots with -Olive Family, with a few disease and pest problems age (including oyster shell scales and wood borers) Habitat -abundantly available in B&B form -Zones 3 to 9 Foliage -Native to the -medium to dark green and forests of Eastern pinnately compound, casting and Midwestern a relatively dense shade, but U.S. and Southern lighter in shade than White Canada; very Ash (Fraxinus americana) common tree due to the more open character of the branching and SELECTIONS slightly thinner leaflets Alternates -leaflets (usually 5) are -shade trees, commonly serrated (but especially for sometimes nearly entire) on the margins and are narrow urban areas (e.g. ovate Corylus colurna, -autumn color is often poor and usually a mixture of Gleditsia green and yellowish green in Oct., but is a bright triacanthos var. golden-yellow in good years inermis, Robinia Flowers pseudoacacia, Ulmus 'Urban' and 'Homestead', etc.) -dioecious (male and female trees) Cultivars – Variants – Related species -green to purple inflorescences in Apr. are not especially -F. pennsylvanica Cimmaron® ('Cimmzam') - a new showy male introduction with a sequence of burgundy to brick Fruits red to orange autumn color -green changing to brown clusters of samaras, with -F. pennsylvanica 'Marshall's Seedless', 'Patmore', and winged seeds littering the ground or gutters in autumn 'Summit' are the most common cultivars, all having (prolific samara production may occur on female trees of glossy dark green summer foliage, good autumn color, this species) and fruitless character, slightly more compact than the Twigs species form -stout (but not as stout as White Ash) and comparatively thin, olive changing to brown and lenticeled -leaf scars half-moon-shaped (or D-shaped, with the "D" on its side) with a brown pubescent bud set directly on top of the flattened leaf scar.

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