Fraxinus pennsylvanica
Marshall
Oleaceae
Calycomelia campestris (Britton) Nieuwl. & Lunell
Calycomelia elliptica (Bosc) Kostel.
Calycomelia expansa (Willd.) Kostel.
Calycomelia lancea (Bosc) Kostel.
Calycomelia lanceolata (Borkh.) Lunell
Calycomelia ovata (Bosc) Kostel.
Calycomelia pennsylvanica (Marshall) Nieuwl.
Calycomelia pubescens (Lam.) Kostel.
Calycomelia richardii (Bosc) Kostel.
Fraxinus americana aucubifolia (H.Jaeger) Wesm.
Fraxinus americana normale Wesm.
Fraxinus americana pennsylvanica (Marshall) Weston
Fraxinus americana pubescens (Lam.) D.J.Browne,
Fraxinus americana rubicunda (Bosc) Wesm.
Fraxinus americana subpubescens (Pers.) Wesm.
Fraxinus arbutifolia Dippel
Fraxinus aucubifolia G.Kirchn.
Fraxinus campestris Britton
Fraxinus cerasifolia Hoffmanns.
Fraxinus cinerea Bosc
Fraxinus concolor Muhl.
Fraxinus darlingtonii Britton
Fraxinus elliptica Bosc
Fraxinus expansa Willd.
Fraxinus fusca Bosc
Fraxinus glabra P.Lawson ex Beissner
Fraxinus juglandifolia aucubifolia H.Jaeger
Fraxinus juglandifolia subintegerrima Vahl
Fraxinus lancea Bosc
Fraxinus lanceolata Borkh.
Fraxinus lancifolia Raf.
Fraxinus longifolia Bosc
Fraxinus media Raf.
Fraxinus nigra pubescens (Lam.) Castigl.
Fraxinus oblongocarpa Buckley
Fraxinus ovalis Willd.
Fraxinus ovata Bosc
Fraxinus platyphylla Hoffmanns.
Fraxinus pubescens Lam.
Fraxinus richardii Bosc
Fraxinus rubicunda Bosc
Fraxinus rufa Bosc
Fraxinus smallii Britton
Fraxinus subvillosa Bosc ex Pers.
Fraxinus trialata Buckley
Fraxinus viridis F.Michx.
Fraxinus viridis pubescens (Lam.) Hitchc.
Fraxinus viridis trialata (Buckley) Schelle
Leptalix cinérea (Bosc) Raf.
Leptalix elliptica (Bosc) Raf.
Leptalix expansa (Willd.) Raf.
Leptalix fusca (Bosc) Raf.
Leptalix lancifolia Raf.
Leptalix longifolia (Bosc) Raf.
Leptalix media Raf.
Leptalix ovata (Bosc) Raf.
Leptalix pubescens (Lam.) Raf.
Leptalix richardii (Bosc) Raf.
Leptalix rubicunda (Bosc) Raf.
Leptalix rufa (Bosc) Raf.
Common Name: Green Ash
General Information
Fraxinus pennsylvanica is a deciduous tree that usually grows around 12 - 20 metres tall, but can reach 30 metres or more[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
74- Title
- Flora of the USSR.
- Publication
-
- Author
- Komarov. V. L.
- Website
- http://www.biodiversitylibrary.org
- Publisher
- Israel Program for Scientific Translation
- Year
- 1968
- ISBN
- -
- Description
- An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet.
]
The plant is harvested from the wild for local use as a medicine and source of materials. It has often been planted as an ornamental and street tree[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
Fraxinus pennsylvanica is suffering the devastating impact of a recently introduced invasive pest, the Emerald Ash Borer, that has rapidly spread across much of its native range and shows no sign of stopping. The disease causes virtually 100% fatality and regeneration is almost non-existent. A population decline of at least 80% over the next 100 years (and likely much faster than that) is assumed. The plant is classified as 'Critically Endangered' in the IUCN Red List of Threatened Species(2017)[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
Known Hazards
None known
Botanical References
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
43- Title
- Gray's Manual of Botany.Eighth Edition
- Publication
-
- Author
- Fernald. M. L.
- Publisher
- American Book Co.; New York
- Year
- 1950
- ISBN
- 0442222505
- Description
- A bit dated but a good and concise flora of the eastern part of N. America.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Range
Central, Eastern and southern N. America - Alberta to Nova Scotia, south to New Mexico and Florida
Habitat
Streambanks, floodplains, wet upland sites and occasionally in swamps, rarely in pure stands; at elevations up to 3,000 metres[
226- Title
- Identification Guide to the Trees of Canada
- Publication
-
- Author
- Lauriault. J.
- Publisher
- Fitzhenry and Whiteside, Ontario.
- Year
- 1989
- ISBN
- 0889025649
- Description
- Very good on identification for non-experts, the book also has a lot of information on plant uses.
,
229- Title
- The Complete Trees of N. America. Field Guide and Natural History.
- Publication
-
- Author
- Elias. T.
- Publisher
- Van Nostrand Reinhold Co.
- Year
- 1980
- ISBN
- 0442238622
- Description
- A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
,
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
Properties
Conservation Status | Critically Endangered |
Edibility Rating | |
Medicinal Rating | |
Habit | Deciduous Tree |
Height | 20.00 m |
Growth Rate | Fast |
Pollinators | Wind |
Self-fertile | No |
Cultivation Status | Wild |
Cultivation Details
Fraxinus pennsylvanica tolerates a broad range of temperatures and precipitation and is probably the most adaptable of all the ash species[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
]. It is a very cold-hardy plant, able to tolerate temperatures down to around -30°c when fully dormant[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]
Prefers a deep loamy soil, even if it is on the heavy side[
1- Title
- RHS Dictionary of Plants plus Supplement. 1956
- Publication
-
- Author
- F. Chittendon.
- Publisher
- Oxford University Press
- Year
- 1951
- ISBN
- -
- Description
- Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Most members of this genus are gross feeders and require a rich soil[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Plants succeed when growing in exposed positions[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
] and also in alkaline soils[
11- Title
- Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
- Publication
-
- Author
- Bean. W.
- Publisher
- Murray
- Year
- 1981
- ISBN
- -
- Description
- A classic with a wealth of information on the plants, but poor on pictures.
]. They tolerate atmospheric pollution[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. A fast-growing tree[
188- Title
- The RHS Gardener's Encyclopedia of Plants and Flowers
- Publication
-
- Author
- Brickell. C.
- Publisher
- Dorling Kindersley Publishers Ltd.
- Year
- 1990
- ISBN
- 0-86318-386-7
- Description
- Excellent range of photographs, some cultivation details but very little information on plant uses.
]. Plants have little tolerance of shade[
226- Title
- Identification Guide to the Trees of Canada
- Publication
-
- Author
- Lauriault. J.
- Publisher
- Fitzhenry and Whiteside, Ontario.
- Year
- 1989
- ISBN
- 0889025649
- Description
- Very good on identification for non-experts, the book also has a lot of information on plant uses.
].
Cultivated as a timber tree in C. and S.E. Europe where it is sometimes naturalized[
50- Title
- Flora Europaea
- Publication
-
- Author
- ?
- Publisher
- Cambridge University Press
- Year
- 1964
- ISBN
- -
- Description
- An immense work in 6 volumes (including the index). The standard reference flora for Europe, it is very terse though and with very little extra information. Not for the casual reader.
]. The cultivar 'Patmore' is disease resistant[
188- Title
- The RHS Gardener's Encyclopedia of Plants and Flowers
- Publication
-
- Author
- Brickell. C.
- Publisher
- Dorling Kindersley Publishers Ltd.
- Year
- 1990
- ISBN
- 0-86318-386-7
- Description
- Excellent range of photographs, some cultivation details but very little information on plant uses.
].
A recently introduced invasive pest, the Emerald Ash Borer has rapidly spread across much of N. America and is devastating the genus Fraxinus. The borer infests and feeds on all the North American ash species it has so far encountered. The nature of the infestation (larval feeding in the phloem) effectively girdles trees as small as 25mm in diameter, which is many years before reproductive maturity, leading to death within five years of infestation. The borer therefore causes virtually 100% mortality of Ash populations. The Ash species are unable to persist for very long through vegetative reproduction, and seeds only remain viable in the soilfor at most 7 - 8 years, so regeneration after borer infestation is minimal or nonexistent. Furthermore, the borer persists in forests in low population densities after major ash population crashes, so the orphaned cohort of ash seedlings that remains is quickly infested as they reach a suitable size[
338- Title
- IUCN Red List of Threatened Species
- Publication
-
- Author
-
- Website
- http://www.iucnredlist.org/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
A dioecious species - both male and female forms must be grown if fruit and seed are required.
Edible Uses
Inner bark - cooked[
105- Title
- Tanaka's Cyclopedia of Edible Plants of the World.
- Publication
-
- Author
- Tanaka. T. & Nakao S.
- Publisher
- Keigaku Publishing; Tokyo
- Year
- 1976
- ISBN
- -
- Description
- The most comprehensive list of edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.
,
161- Title
- Food Plants of the N. American Indians. Publication no. 237.
- Publication
-
- Author
- Yanovsky. E.
- Publisher
- U.S. Depf of Agriculture.
- Year
-
- ISBN
- -
- Description
- A comprehensive but very terse guide. Not for the casual reader.
,
177- Title
- Plants for Human Consumption.
- Publication
-
- Author
- Kunkel. G.
- Publisher
- Koeltz Scientific Books
- Year
- 1984
- ISBN
- 3874292169
- Description
- An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
]. The cambium layer can be scraped down in long, fluffy layers and cooked[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. It is said to taste like eggs[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. Inner bark can also be dried, ground into a powder and then used as a thickening in soups etc or mixed with cereals when making bread.
Medicinal
The bark and leaves are a bitter tonic[
4- Title
- A Modern Herbal.
- Publication
-
- Author
- Grieve.
- Publisher
- Penguin
- Year
- 1984
- ISBN
- 0-14-046-440-9
- Description
- Not so modern (1930's?) but lots of information, mainly temperate plants.
,
61- Title
- A Dictionary of Plants Used by Man.
- Publication
-
- Author
- Usher. G.
- Publisher
- Constable
- Year
- 1974
- ISBN
- 0094579202
- Description
- Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
]. An infusion of the inner bark has been used in the treatment of depression and fatigue[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].
The root is diuretic[
4- Title
- A Modern Herbal.
- Publication
-
- Author
- Grieve.
- Publisher
- Penguin
- Year
- 1984
- ISBN
- 0-14-046-440-9
- Description
- Not so modern (1930's?) but lots of information, mainly temperate plants.
].
Agroforestry Uses:
A fairly wind resistant tree, it can be grown as part of a shelterbelt planting, and is used in reforestation projects[
74- Title
- Flora of the USSR.
- Publication
-
- Author
- Komarov. V. L.
- Website
- http://www.biodiversitylibrary.org
- Publisher
- Israel Program for Scientific Translation
- Year
- 1968
- ISBN
- -
- Description
- An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Fraxinus species in general are gross feeders with an extensive, fibrous root system, which makes transplanting easy, but means that other species will often not grow well if planted nearby, especially if they are shallow rooted[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
],
Other Uses
A red dye is extracted from the bark[
226- Title
- Identification Guide to the Trees of Canada
- Publication
-
- Author
- Lauriault. J.
- Publisher
- Fitzhenry and Whiteside, Ontario.
- Year
- 1989
- ISBN
- 0889025649
- Description
- Very good on identification for non-experts, the book also has a lot of information on plant uses.
].
Logs of wood can be beaten with mauls to separate the growth layers, these layers can then be cut into strips and woven into baskets[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].
The wood is hard, heavy, rather strong, tough, elastic, brittle, coarse-grained. It weighs 44lb per cubic foot. Used for tool handles, furniture etc[
61- Title
- A Dictionary of Plants Used by Man.
- Publication
-
- Author
- Usher. G.
- Publisher
- Constable
- Year
- 1974
- ISBN
- 0094579202
- Description
- Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
,
82- Title
- Manual of the Trees of N. America.
- Publication
-
- Author
- Sargent. C. S.
- Website
- http://www.biodiversitylibrary.org/
- Publisher
- Dover Publications Inc. New York.
- Year
- 1965
- ISBN
- 0-486-20278-X
- Description
- Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader. It can be downloaded from the internet.
,
149- Title
- Trees of Central Texas.
- Publication
-
- Author
- Vines. R. A.
- Publisher
- University of Texas Press
- Year
- 1987
- ISBN
- 0-292-78958-3
- Description
- A good concise guide, it gives details of habitats and some of the uses of trees growing in Texas.
,
171- Title
- Economic Botany.
- Publication
-
- Author
- Hill. A. F.
- Publisher
- The Maple Press
- Year
- 1952
- ISBN
- -
- Description
- Not very comprehensive, but it is quite readable and goes into some detail about the plants it does cover.
,
235- Title
- An Illustrated Flora of the Northern United States and Canada
- Publication
-
- Author
- Britton. N. L. Brown. A.
- Publisher
- Dover Publications. New York.
- Year
- 1970
- ISBN
- 0-486-22642-5
- Description
- Reprint of a 1913 Flora, but still a very useful book.
]. The wood is of poorer quality than Fraxinus americana, though it is usually sold under that name[
226- Title
- Identification Guide to the Trees of Canada
- Publication
-
- Author
- Lauriault. J.
- Publisher
- Fitzhenry and Whiteside, Ontario.
- Year
- 1989
- ISBN
- 0889025649
- Description
- Very good on identification for non-experts, the book also has a lot of information on plant uses.
].
Propagation
The seed is best harvested green - as soon as it is fully developed but before it has fully dried on the tree - and can then be sown immediately in a cold frame[
80- Title
- Hardy Woody Plants from Seed.
- Publication
-
- Author
- McMillan-Browse. P.
- Publisher
- Grower Books
- Year
- 1985
- ISBN
- 0-901361-21-6
- Description
- Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
]. It usually germinates in the spring[
80- Title
- Hardy Woody Plants from Seed.
- Publication
-
- Author
- McMillan-Browse. P.
- Publisher
- Grower Books
- Year
- 1985
- ISBN
- 0-901361-21-6
- Description
- Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
]. Stored seed requires a period of cold stratification and is best sown as soon as possible in a cold frame[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in a cold frame for their first winter. Plant them out into their permanent positions or a nursery bed in late spring or early summer of the following year.
If you have sufficient seed then it is possible to sow it directly into an outdoor seedbed, preferably in the autumn. Grow the seedlings on in the seedbed for 2 years before transplanting either to their permanent positions or to nursery beds.
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