Green Ash (Fraxinus pennsylvanica)

Common names:
Give a thumbs up Green Ash
Give a thumbs up Downy Ash
Give a thumbs up Water Ash
Give a thumbs up Swamp Ash
Give a thumbs up Red Ash

General Plant Information (Edit)
Plant Habit: Tree
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet
Wet Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 9b
Plant Height: 40 - 60 feet
Plant Spread: 20 - 40 feet
Leaves: Good fall color
Unusual foliage color
Fruit: Edible to birds
Flowers: Inconspicuous
Bloom Size: Under 1"
Flower Time: Spring
Suitable Locations: Street Tree
Uses: Shade Tree
Will Naturalize
Edible Parts: Fruit
Wildlife Attractant: Birds
Resistances: Deer Resistant
Rabbit Resistant
Propagation: Seeds: Self fertile
Stratify seeds: 3 months at 40 degrees
Suitable for wintersowing
Sow in situ
Pollinators: Wind
Miscellaneous: Tolerates poor soil
Conservation status: Critically Endangered (CR)

Conservation status:
Conservation status: Critically Endangered
brown diamond furrowed bark, looking up

Photo gallery:

Posted by chelle (N.E. Indiana - Zone 5b) on Oct 13, 2011 5:31 AM

Species native to Indiana, and to all eastern US states, with the exception of most of the state of Florida.

This species may be susceptible to Green Ash Borer.

*When planting any full-sized Ash as a shade tree, do not place it less than forty feet from your foundation! This species will mature to massive proportions, with a very wide and broadening branch structure. At maturity some branches become rather spongy and branch drop is common, most notably subsequent to a heavy rainfall.

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Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Dec 16, 2017 4:15 PM

The Green Ash (Fraxinus pennsylvanica lanceolata) and the Red Ash (Fraxinus pennsylvanica pennsylvanica) are now really recognized as the same one species, though the latter variety has very fuzzy hairy twigs and some hair under the leaves. (My old tree books show the Red Ash and the Green Ash as being separate varieties). This species is abundantly common all over the place in dry-mesic uplands, and bottomlands & swamps, and along climax forest edges, and making up a big part of pioneer forests with Boxelder, Black Walnut, Cottonwoods, etc. in a large native range from Nova Scotia down to northern Florida to east Texas up the Great Plains into eastern Montana and southern Saskatchewan & Manitoba. The leaves of this compound species get 6 to 9 inches long with 5 to 9 short-stalked leaflets that are 3 to 4 inches long x 1 to 1.5 inches wide and that develop bright yellow autumn color. The bark is brown and furrowed with diamond-shaped ridges appearing when older. Seedless male cultivars of this species have been planted more than any other shade and street tree since the 1970's because it is fast growing, about 2 to 2.5 feet/year and is very adaptable to many soils, even heavy clay compacted ones from modern development construction. Unfortunately, the Emerald Ash Borer from China got loose in Michigan around 2000 AD and has been killing off the great majority of Green Ash more than any other ash in the Midwest and expanding out from there. There are a few lingering trees left in the devastated areas. There is work being done to collect those specimens that are showing some descent resistance, probably no more than 1 in a thousand, and breeding them to bring forth resistant trees. The several present cultivars don't have any resistance, and the hope is in the genetic diversity of wild trees.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Ash tree? by wildflowers Sep 29, 2019 3:37 PM 6
id please! by Metro50 May 13, 2019 6:26 AM 22
Need help to identify species (Binomial name if possible) 10 by NightCrow Jan 23, 2019 10:45 PM 2
unknown tree or shrub by Muddy1 Oct 29, 2017 8:41 AM 4
Does anyone know what tree this is? by Toni Jun 11, 2017 9:38 AM 4
Plant ID. Poison Sumac? by Rachelfaith05 Jun 1, 2017 8:58 AM 9
ID tree planted by the city by kevinbenoit Jun 30, 2016 8:22 PM 6
Interesting plant by Junker1004 May 20, 2016 1:20 PM 280
Red elderberry (Sambucus racemosa); in shade by Anderwood Aug 29, 2015 3:15 PM 4
mystery plant by barbaranull33 Feb 12, 2015 11:14 AM 11

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